The document discusses Virtio, an interface for virtualized I/O devices. It introduces Virtio's architecture, which involves Virtqueues and Vrings to facilitate communication between guest drivers and hypervisor-level device emulators. It outlines the five Virtio APIs for adding, kicking, getting buffers and enabling/disabling callbacks. It also provides an overview of steps for adding new Virtio devices and drivers.
QEMU is an emulator that uses dynamic translation to emulate one instruction set architecture (ISA) on another host ISA. It translates guest instructions to an intermediate representation (TCG IR) code, and then compiles the IR code to native host instructions. QEMU employs techniques like translation block caching and chaining to improve the performance of dynamic translation. It also uses helper functions to offload complex operations during translation to improve efficiency.
The presentation will cover Xen Automotive. We will elaborate technical solutions for the identified gaps:
1. ARM architecture - support HW virtualization extensions for embedded systems
2. Stability requirements
3. RT Scheduler
4. Rich virtualized peripheral support (WiFi, Gfx, MM, USB, etc.)
5. Performance benchmarking
6. Security
QEMU is a free and open-source hypervisor that performs hardware virtualization by emulating CPUs through dynamic binary translation and providing device models. This allows it to run unmodified guest operating systems. It can be used to create virtual machines similarly to VMWare, VirtualBox, KVM, and Xen. QEMU also supports emulating different CPU architectures and can save and restore the state of a virtual machine.
This document discusses debugging the ACPI subsystem in the Linux kernel. It provides an overview of the ACPI subsystem and components like ACPICA and the namespace. It describes how to enable ACPI debug logging via the acpi.debug_layer and acpi.debug_level kernel parameters. It also covers overriding ACPI definition blocks tables and tracing ACPI temperature as a debugging case study.
The document discusses QEMU and adding a new device to it. It begins with an introduction to QEMU and its uses. It then discusses setting up a development environment, compiling QEMU, and examples of existing devices. The main part explains how to add a new "Devix" device by creating source files, registering the device type, initializing PCI configuration, and registering memory regions. It demonstrates basic functionality like interrupts and I/O access callbacks. The goal is to introduce developing new emulated devices for QEMU.
Vincent Van der Kussen discusses KVM and related virtualization tools. KVM is a kernel module that allows Linux to function as a hypervisor. It supports x86, PowerPC and s390 architectures. Key tools discussed include libvirt (the virtualization API), virsh (command line tool for libvirt), Qemu (runs virtual machines), and virt-tools like virt-install. The document provides an overview of using these tools to manage virtual machines and storage.
Often called as the Swiss Army Knife of Embedded Linux, BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. It is written with size-optimization
and limited resources in mind. Here is a presentation that details about BusyBox.
The document discusses Virtio, an interface for virtualized I/O devices. It introduces Virtio's architecture, which involves Virtqueues and Vrings to facilitate communication between guest drivers and hypervisor-level device emulators. It outlines the five Virtio APIs for adding, kicking, getting buffers and enabling/disabling callbacks. It also provides an overview of steps for adding new Virtio devices and drivers.
QEMU is an emulator that uses dynamic translation to emulate one instruction set architecture (ISA) on another host ISA. It translates guest instructions to an intermediate representation (TCG IR) code, and then compiles the IR code to native host instructions. QEMU employs techniques like translation block caching and chaining to improve the performance of dynamic translation. It also uses helper functions to offload complex operations during translation to improve efficiency.
The presentation will cover Xen Automotive. We will elaborate technical solutions for the identified gaps:
1. ARM architecture - support HW virtualization extensions for embedded systems
2. Stability requirements
3. RT Scheduler
4. Rich virtualized peripheral support (WiFi, Gfx, MM, USB, etc.)
5. Performance benchmarking
6. Security
QEMU is a free and open-source hypervisor that performs hardware virtualization by emulating CPUs through dynamic binary translation and providing device models. This allows it to run unmodified guest operating systems. It can be used to create virtual machines similarly to VMWare, VirtualBox, KVM, and Xen. QEMU also supports emulating different CPU architectures and can save and restore the state of a virtual machine.
This document discusses debugging the ACPI subsystem in the Linux kernel. It provides an overview of the ACPI subsystem and components like ACPICA and the namespace. It describes how to enable ACPI debug logging via the acpi.debug_layer and acpi.debug_level kernel parameters. It also covers overriding ACPI definition blocks tables and tracing ACPI temperature as a debugging case study.
The document discusses QEMU and adding a new device to it. It begins with an introduction to QEMU and its uses. It then discusses setting up a development environment, compiling QEMU, and examples of existing devices. The main part explains how to add a new "Devix" device by creating source files, registering the device type, initializing PCI configuration, and registering memory regions. It demonstrates basic functionality like interrupts and I/O access callbacks. The goal is to introduce developing new emulated devices for QEMU.
Vincent Van der Kussen discusses KVM and related virtualization tools. KVM is a kernel module that allows Linux to function as a hypervisor. It supports x86, PowerPC and s390 architectures. Key tools discussed include libvirt (the virtualization API), virsh (command line tool for libvirt), Qemu (runs virtual machines), and virt-tools like virt-install. The document provides an overview of using these tools to manage virtual machines and storage.
Often called as the Swiss Army Knife of Embedded Linux, BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. It is written with size-optimization
and limited resources in mind. Here is a presentation that details about BusyBox.
This document provides an overview of QEMU, including its use of dynamic translation and Tiny Code Generator (TCG) to emulate target CPUs on the host system. It discusses how QEMU translates target instructions into a RISC-like intermediate representation (TCG ops), optimizes and converts them to host instructions. The document also mentions Linaro's work with QEMU and a QEMU monitor tool for debugging ARM systems emulated by QEMU.
- The document discusses Linux network stack monitoring and configuration. It begins with definitions of key concepts like RSS, RPS, RFS, LRO, GRO, DCA, XDP and BPF.
- It then provides an overview of how the network stack works from the hardware interrupts and driver level up through routing, TCP/IP and to the socket level.
- Monitoring tools like ethtool, ftrace and /proc/interrupts are described for viewing hardware statistics, software stack traces and interrupt information.
The document discusses developing network device drivers for embedded Linux. It covers key topics like socket buffers, network devices, communicating with network protocols and PHYs, buffer management, and differences between Ethernet and WiFi drivers. The outline lists these topics and others like throughput and considerations. Prerequisites include C skills, Linux knowledge, and an understanding of networking and embedded driver development.
The document discusses Linux networking architecture and covers several key topics in 3 paragraphs or less:
It first describes the basic structure and layers of the Linux networking stack including the network device interface, network layer protocols like IP, transport layer, and sockets. It then discusses how network packets are managed in Linux through the use of socket buffers and associated functions. The document also provides an overview of the data link layer and protocols like Ethernet, PPP, and how they are implemented in Linux.
This document discusses KVM virtualization and why it is considered the best platform. It states that KVM provides high performance, strong security through EAL4+ certification and SE Linux, and can save customers up to 70% on costs compared to other solutions. It also supports various operating systems and works with Red Hat products like OpenStack and Red Hat Enterprise Virtualization for managing virtualization. Charts are included showing KVM outperforming VMware on benchmark tests using different CPU core counts.
It describes the MMC storage device driver functionality in Linux Kernel and it's role. It explains different type of storage devices available and how they are handled from MMC driver point of view. It describes eMMC (internal storage) device and SD (external storage) devices in details and SD protocol used for communicating with these devices in Linux.
The document discusses Linux network drivers and provides information about:
- The Linux network subsystem and protocol stack, typically using TCP/IP.
- Network interface card (NIC) drivers which provide a uniform interface for the network layer to access physical network cards.
- Key data structures like struct sk_buff and struct net_device that network drivers interact with for packet handling and device operations.
- Functions for network device registration, open/close, interrupt handling, and flow control.
- Examples of simple network drivers and how to write one for a Realtek NIC.
This document discusses different methods for virtualizing I/O in virtual machines. It covers virtual I/O approaches like virtio, PCI passthrough, and SR-IOV. It also explains the role of the VMM/hypervisor in managing I/O between VMs and physical devices using techniques like VT-d, Open vSwitch, and single root I/O virtualization. Finally, it discusses emerging standards for virtual switching like virtual Ethernet bridging.
The document discusses various data structures and functions related to network packet processing in the Linux kernel socket layer. It describes the sk_buff structure that is used to pass packets between layers. It also explains the net_device structure that represents a network interface in the kernel. When a packet is received, the interrupt handler will raise a soft IRQ for processing. The packet will then traverse various protocol layers like IP and TCP to be eventually delivered to a socket and read by a userspace application.
LAS16-111: Easing Access to ARM TrustZone – OP-TEE and Raspberry Pi 3Linaro
LAS16-111: Raspberry Pi3, OP-TEE and JTAG debugging
Speakers:
Date: September 26, 2016
★ Session Description ★
ARM TrustZone is a critical technology for securing IoT devices and systems. But awareness of TrustZone and its benefits lags within the maker community as well as among enterprises. The first step to solving this problem is lowering the cost of access. Sequitur Labs and Linaro have joined forces to address this problem by making a port of OP-TEE available on the Raspberry Pi 3. The presentation covers the value of TrustZone for securing IoT and how customers can learn more through this joint effort.
Embedded systems security remains a challenge for many developers. Awareness of mature, proven technologies such as ARM TrustZone is very low among the Maker community as well as among enterprises. As a result this foundational technology is largely being ignored as a security solution. Sequitur Labs and Linaro have taken an innovative approach combining an Open Source solution – OP-TEE with Raspberry Pi 3. The Raspberry Pi 3 is one of the world’s most popular platforms among device makers. Its value as an educational tool for learning about embedded systems development is proven.
Sequitur Labs have also enabled bare metal debugging via JTag on the Pi 3 enhancing the value of the Pi 3 as an educational tool for embedded systems development.
The presentation will focus on
ARM v8a architecture and instruction set
ARM Trusted Firmware
TrustZone and OP-TEE basics
JTAG and bare metal debugging the Raspberry Pi 3
★ Resources ★
Etherpad: pad.linaro.org/p/las16-111
Presentations & Videos: http://connect.linaro.org/resource/las16/las16-111/
★ Event Details ★
Linaro Connect Las Vegas 2016 – #LAS16
September 26-30, 2016
http://www.linaro.org
http://connect.linaro.org
Talk for AWS re:Invent 2014. Video: https://www.youtube.com/watch?v=7Cyd22kOqWc . Netflix tunes Amazon EC2 instances for maximum performance. In this session, you learn how Netflix configures the fastest possible EC2 instances, while reducing latency outliers. This session explores the various Xen modes (e.g., HVM, PV, etc.) and how they are optimized for different workloads. Hear how Netflix chooses Linux kernel versions based on desired performance characteristics and receive a firsthand look at how they set kernel tunables, including hugepages. You also hear about Netflix’s use of SR-IOV to enable enhanced networking and their approach to observability, which can exonerate EC2 issues and direct attention back to application performance.
The document provides an overview of kernel crash dump analysis including:
- The tools and data required such as the crash utility, kernel symbol files, vmcore files
- How to install and use these components
- Basic crash commands to analyze system, memory, storage, and network subsystems
- How to dynamically load crash extension modules to add custom commands
The Linux Kernel Scheduler (For Beginners) - SFO17-421Linaro
Session ID: SFO17-421
Session Name: The Linux Kernel Scheduler (For Beginners) - SFO17-421
Speaker: Viresh Kumar
Track: Power Management
★ Session Summary ★
This talk will take you through the internals of the Linux Kernel scheduler.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/sfo17/sfo17-421/
Presentation:
Video: https://www.youtube.com/watch?v=q283Wm__QQ0
---------------------------------------------------
★ Event Details ★
Linaro Connect San Francisco 2017 (SFO17)
25-29 September 2017
Hyatt Regency San Francisco Airport
---------------------------------------------------
Keyword:
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://twitter.com/linaroorg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961
The second part of Linux Internals covers system calls, process subsystem and inter process communication mechanisms. Understanding these services provided by Linux are essential for embedded systems engineer.
This document discusses Linux kernel crash capture and analysis. It begins with an overview of what constitutes a kernel crash and reasons crashes may occur, both from hardware and software issues. It then covers using kdump to capture virtual memory cores (vmcores) when a crash happens, and configuring kdump for optimal core collection. Finally, it discusses analyzing vmcores after collection using the crash utility, including commands to inspect system information, backtraces, logs, and more.
In this talk Jiří Pírko discusses the design and evolution of the VLAN implementation in Linux, the challenges and pitfalls as well as hardware acceleration and alternative implementations.
Jiří Pírko is a major contributor to kernel networking and the creator of libteam for link aggregation.
This course gets you started with writing device drivers in Linux by providing real time hardware exposure. Equip you with real-time tools, debugging techniques and industry usage in a hands-on manner. Dedicated hardware by Emertxe's device driver learning kit. Special focus on character and USB device drivers.
Systemd is a system and service manager that replaces sysvinit. It manages services, devices, mounts and other system components. It relies on control groups (cgroups) to isolate and manage processes and resources for each service. Services are configured through declarative unit files instead of shell scripts. Systemd provides features like socket activation, timers, and integrates with journald for logging.
DPDK Summit 2015 - RIFT.io - Tim MortsolfJim St. Leger
DPDK Summit 2015 in San Francisco.
Presentation by RIFT.io's CTO Tim Mortsolf.
For additional details and the video recording please visit www.dpdksummit.com.
Mario Smarduch, Senior Virtualization Engineer from the Samsung OSG, gives his perspective on Network Function Virtualization, including discussions of the Xen platform.
This document provides an overview of QEMU, including its use of dynamic translation and Tiny Code Generator (TCG) to emulate target CPUs on the host system. It discusses how QEMU translates target instructions into a RISC-like intermediate representation (TCG ops), optimizes and converts them to host instructions. The document also mentions Linaro's work with QEMU and a QEMU monitor tool for debugging ARM systems emulated by QEMU.
- The document discusses Linux network stack monitoring and configuration. It begins with definitions of key concepts like RSS, RPS, RFS, LRO, GRO, DCA, XDP and BPF.
- It then provides an overview of how the network stack works from the hardware interrupts and driver level up through routing, TCP/IP and to the socket level.
- Monitoring tools like ethtool, ftrace and /proc/interrupts are described for viewing hardware statistics, software stack traces and interrupt information.
The document discusses developing network device drivers for embedded Linux. It covers key topics like socket buffers, network devices, communicating with network protocols and PHYs, buffer management, and differences between Ethernet and WiFi drivers. The outline lists these topics and others like throughput and considerations. Prerequisites include C skills, Linux knowledge, and an understanding of networking and embedded driver development.
The document discusses Linux networking architecture and covers several key topics in 3 paragraphs or less:
It first describes the basic structure and layers of the Linux networking stack including the network device interface, network layer protocols like IP, transport layer, and sockets. It then discusses how network packets are managed in Linux through the use of socket buffers and associated functions. The document also provides an overview of the data link layer and protocols like Ethernet, PPP, and how they are implemented in Linux.
This document discusses KVM virtualization and why it is considered the best platform. It states that KVM provides high performance, strong security through EAL4+ certification and SE Linux, and can save customers up to 70% on costs compared to other solutions. It also supports various operating systems and works with Red Hat products like OpenStack and Red Hat Enterprise Virtualization for managing virtualization. Charts are included showing KVM outperforming VMware on benchmark tests using different CPU core counts.
It describes the MMC storage device driver functionality in Linux Kernel and it's role. It explains different type of storage devices available and how they are handled from MMC driver point of view. It describes eMMC (internal storage) device and SD (external storage) devices in details and SD protocol used for communicating with these devices in Linux.
The document discusses Linux network drivers and provides information about:
- The Linux network subsystem and protocol stack, typically using TCP/IP.
- Network interface card (NIC) drivers which provide a uniform interface for the network layer to access physical network cards.
- Key data structures like struct sk_buff and struct net_device that network drivers interact with for packet handling and device operations.
- Functions for network device registration, open/close, interrupt handling, and flow control.
- Examples of simple network drivers and how to write one for a Realtek NIC.
This document discusses different methods for virtualizing I/O in virtual machines. It covers virtual I/O approaches like virtio, PCI passthrough, and SR-IOV. It also explains the role of the VMM/hypervisor in managing I/O between VMs and physical devices using techniques like VT-d, Open vSwitch, and single root I/O virtualization. Finally, it discusses emerging standards for virtual switching like virtual Ethernet bridging.
The document discusses various data structures and functions related to network packet processing in the Linux kernel socket layer. It describes the sk_buff structure that is used to pass packets between layers. It also explains the net_device structure that represents a network interface in the kernel. When a packet is received, the interrupt handler will raise a soft IRQ for processing. The packet will then traverse various protocol layers like IP and TCP to be eventually delivered to a socket and read by a userspace application.
LAS16-111: Easing Access to ARM TrustZone – OP-TEE and Raspberry Pi 3Linaro
LAS16-111: Raspberry Pi3, OP-TEE and JTAG debugging
Speakers:
Date: September 26, 2016
★ Session Description ★
ARM TrustZone is a critical technology for securing IoT devices and systems. But awareness of TrustZone and its benefits lags within the maker community as well as among enterprises. The first step to solving this problem is lowering the cost of access. Sequitur Labs and Linaro have joined forces to address this problem by making a port of OP-TEE available on the Raspberry Pi 3. The presentation covers the value of TrustZone for securing IoT and how customers can learn more through this joint effort.
Embedded systems security remains a challenge for many developers. Awareness of mature, proven technologies such as ARM TrustZone is very low among the Maker community as well as among enterprises. As a result this foundational technology is largely being ignored as a security solution. Sequitur Labs and Linaro have taken an innovative approach combining an Open Source solution – OP-TEE with Raspberry Pi 3. The Raspberry Pi 3 is one of the world’s most popular platforms among device makers. Its value as an educational tool for learning about embedded systems development is proven.
Sequitur Labs have also enabled bare metal debugging via JTag on the Pi 3 enhancing the value of the Pi 3 as an educational tool for embedded systems development.
The presentation will focus on
ARM v8a architecture and instruction set
ARM Trusted Firmware
TrustZone and OP-TEE basics
JTAG and bare metal debugging the Raspberry Pi 3
★ Resources ★
Etherpad: pad.linaro.org/p/las16-111
Presentations & Videos: http://connect.linaro.org/resource/las16/las16-111/
★ Event Details ★
Linaro Connect Las Vegas 2016 – #LAS16
September 26-30, 2016
http://www.linaro.org
http://connect.linaro.org
Talk for AWS re:Invent 2014. Video: https://www.youtube.com/watch?v=7Cyd22kOqWc . Netflix tunes Amazon EC2 instances for maximum performance. In this session, you learn how Netflix configures the fastest possible EC2 instances, while reducing latency outliers. This session explores the various Xen modes (e.g., HVM, PV, etc.) and how they are optimized for different workloads. Hear how Netflix chooses Linux kernel versions based on desired performance characteristics and receive a firsthand look at how they set kernel tunables, including hugepages. You also hear about Netflix’s use of SR-IOV to enable enhanced networking and their approach to observability, which can exonerate EC2 issues and direct attention back to application performance.
The document provides an overview of kernel crash dump analysis including:
- The tools and data required such as the crash utility, kernel symbol files, vmcore files
- How to install and use these components
- Basic crash commands to analyze system, memory, storage, and network subsystems
- How to dynamically load crash extension modules to add custom commands
The Linux Kernel Scheduler (For Beginners) - SFO17-421Linaro
Session ID: SFO17-421
Session Name: The Linux Kernel Scheduler (For Beginners) - SFO17-421
Speaker: Viresh Kumar
Track: Power Management
★ Session Summary ★
This talk will take you through the internals of the Linux Kernel scheduler.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/sfo17/sfo17-421/
Presentation:
Video: https://www.youtube.com/watch?v=q283Wm__QQ0
---------------------------------------------------
★ Event Details ★
Linaro Connect San Francisco 2017 (SFO17)
25-29 September 2017
Hyatt Regency San Francisco Airport
---------------------------------------------------
Keyword:
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://twitter.com/linaroorg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961
The second part of Linux Internals covers system calls, process subsystem and inter process communication mechanisms. Understanding these services provided by Linux are essential for embedded systems engineer.
This document discusses Linux kernel crash capture and analysis. It begins with an overview of what constitutes a kernel crash and reasons crashes may occur, both from hardware and software issues. It then covers using kdump to capture virtual memory cores (vmcores) when a crash happens, and configuring kdump for optimal core collection. Finally, it discusses analyzing vmcores after collection using the crash utility, including commands to inspect system information, backtraces, logs, and more.
In this talk Jiří Pírko discusses the design and evolution of the VLAN implementation in Linux, the challenges and pitfalls as well as hardware acceleration and alternative implementations.
Jiří Pírko is a major contributor to kernel networking and the creator of libteam for link aggregation.
This course gets you started with writing device drivers in Linux by providing real time hardware exposure. Equip you with real-time tools, debugging techniques and industry usage in a hands-on manner. Dedicated hardware by Emertxe's device driver learning kit. Special focus on character and USB device drivers.
Systemd is a system and service manager that replaces sysvinit. It manages services, devices, mounts and other system components. It relies on control groups (cgroups) to isolate and manage processes and resources for each service. Services are configured through declarative unit files instead of shell scripts. Systemd provides features like socket activation, timers, and integrates with journald for logging.
DPDK Summit 2015 - RIFT.io - Tim MortsolfJim St. Leger
DPDK Summit 2015 in San Francisco.
Presentation by RIFT.io's CTO Tim Mortsolf.
For additional details and the video recording please visit www.dpdksummit.com.
Mario Smarduch, Senior Virtualization Engineer from the Samsung OSG, gives his perspective on Network Function Virtualization, including discussions of the Xen platform.
44CON 2014 - Stupid PCIe Tricks, Joe Fitzpatrick44CON
Joe FitzPatrick gave a presentation on exploiting PCIe (Peripheral Component Interconnect Express) buses for hardware attacks. He discussed using DMA (direct memory access) over PCIe to read and write system memory, modify firmware, and potentially bypass mitigations like IOMMU (input-output memory management unit). FitzPatrick demonstrated proof-of-concept attacks on Macs and Windows PCs using custom PCIe devices and software. However, he noted that fully bypassing protections like VT-d on Macbooks had not yet been achieved and more work is needed to build attacks without imitating a genuine device.
The document discusses reverse engineering the firmware of Swisscom's Centro Grande modems. It identifies several vulnerabilities found, including a command overflow issue that allows complete control of the device by exceeding the input buffer, and multiple buffer overflow issues that can be exploited to execute code remotely by crafting specially formatted XML files. Details are provided on the exploitation techniques and timeline of coordination with Swisscom to address the vulnerabilities.
The document discusses VPU and GPGPU computing. It explains that a VPU is a visual processing unit, also known as a GPU. GPUs are massively parallel and multithreaded processors that are better than CPUs for tasks like machine learning and graphics processing. The document then discusses GPU architecture, memory, and programming models like CUDA. It provides examples of GPU usage and concludes that GPGPU is used in fields like machine learning, robotics, and scientific computing.
This document discusses PostgreSQL and Solaris as a low-cost platform for medium to large scale critical scenarios. It provides an overview of PostgreSQL, highlighting features like MVCC, PITR, and ACID compliance. It describes how Solaris and PostgreSQL integrate well, with benefits like DTrace support, scalability on multicore/multiprocessor systems, and Solaris Cluster support. Examples are given for installing PostgreSQL on Solaris using different methods, configuring zones for isolation, using ZFS for storage, and monitoring performance with DTrace scripts.
The document discusses Ganglia, an open-source monitoring system for clusters and grids. It provides an overview of Ganglia's architecture and components, including Gmond for metric gathering, Gmetad for aggregation, and an Apache web frontend for presentation. Configuration details are also covered for Gmond, Gmetad, and the underlying Round Robin Database storage.
Many companies build new-age KVM clouds, only to find out that their applications & workloads do not perform well. In this talk we’ll show you how to get the most out of your KVM cloud and how to optimize it for performance: You’ll understand why performance matters and how to measure it properly. We’ll teach you how to optimize CPU and memory for ultimate performance and how to tune the storage layer for performance. You’ll find out what are the main components of an efficient new-age cloud and which network components work best. In addition, you’ll learn how to select the right hardware to achieve unmatched performance for your new-age cloud and applications.
Venko Moyankov is an experienced system administrator and solutions architect at StorPool storage. He has experience with managing large virtualizations, working in telcos, designing and supporting the infrastructure of large enterprises. In the last year, his focus has been in helping companies globally to build the best storage solution according to their needs and projects.
Achieving the Ultimate Performance with KVMDevOps.com
Building and managing a cloud is not an easy task. It needs solid knowledge, proper planning and extensive experience in selecting the proper components and putting them together.
Many companies build new-age KVM clouds, only to find out that their applications & workloads do not perform well. Join this webinar to learn how to get the most out of your KVM cloud and how to optimize it for performance.
Join this webinar and learn:
Why performance matters and how to measure it properly?
What are the main components of an efficient new-age cloud?
How to select the right hardware?
How to optimize CPU and memory for ultimate performance?
Which network components work best?
How to tune the storage layer for performance?
This document summarizes VPU and GPGPU computing technologies. It discusses that a VPU is a visual processing unit, also known as a GPU. GPUs have massively parallel architectures that allow them to perform better than CPUs for some complex computational tasks. The document then discusses GPU, PPU and GPGPU architectures, programming models like CUDA, and applications of GPGPU computing such as machine learning, robotics and scientific research.
This document summarizes VPU and GPGPU technologies. It discusses that a VPU is a visual processing unit, also known as a GPU. GPUs have massively parallel architectures that allow them to perform better than CPUs for some complex computational tasks. The document then discusses GPU architecture including stream processing, graphics pipelines, shaders, and GPU clusters. It provides an example of using CUDA for GPU computing and discusses how GPUs are used for general purpose computing through frameworks like CUDA.
This document summarizes VPU and GPGPU computing technologies. It discusses that a VPU is a visual processing unit, also known as a GPU. GPUs provide massively parallel and multithreaded processing capabilities. GPUs are now commonly used for general purpose computing due to their ability to handle complex computational tasks faster than CPUs in some cases. The document then discusses GPU and PPU architectures, programming models like CUDA, and applications of GPGPU computing such as machine learning, robotics, and scientific research.
This document provides information on various debugging and profiling tools that can be used for Ruby including:
- lsof to list open files for a process
- strace to trace system calls and signals
- tcpdump to dump network traffic
- google perftools profiler for CPU profiling
- pprof to analyze profiling data
It also discusses how some of these tools have helped identify specific performance issues with Ruby like excessive calls to sigprocmask and memcpy calls slowing down EventMachine with threads.
The document provides instructions for setting up a TI-RTOS project for the CC1352R wireless microcontroller. It describes creating a CCS project targeting the CC1352R, configuring compiler and linker settings, generating a system configuration file, and adding TI-RTOS and driver library files. The goal is to build a basic "hello world" project to demonstrate real-time operating system functionality on the CC1352R wireless microcontroller.
While probably the most prominent, Docker is not the only tool for building and managing containers. Originally meant to be a "chroot on steroids" to help debug systemd, systemd-nspawn provides a fairly uncomplicated approach to work with containers. Being part of systemd, it is available on most recent distributions out-of-the-box and requires no additional dependencies.
This deck will introduce a few concepts involved in containers and will guide you through the steps of building a container from scratch. The payload will be a simple service, which will be automatically activated by systemd when the first request arrives.
The document describes Linux containerization and virtualization technologies including containers, control groups (cgroups), namespaces, and backups. It discusses:
1) How cgroups isolate and limit system resources for containers through mechanisms like cpuset, cpuacct, cpu, memory, blkio, and freezer.
2) How namespaces isolate processes by ID, mounting, networking, IPC, and other resources to separate environments for containers.
3) The new backup system which uses thin provisioning and snapshotting to efficiently backup container environments to backup servers and restore individual accounts or full servers as needed.
PL/CUDA allows running CUDA C code directly in PostgreSQL user-defined functions. This allows advanced analytics and machine learning algorithms to be run directly in the database.
The gstore_fdw foreign data wrapper allows data to be stored directly in GPU memory, accessed via SQL, eliminating the overhead of copying data between CPU and GPU memory for each query.
Integrating PostgreSQL with GPU computing and machine learning frameworks allows for fast data exploration and model training by combining flexible SQL queries with high-performance analytics directly on the data.
The document discusses challenges and opportunities in connecting the Internet of Things (IoT) to the World Wide Web. It outlines differences between developing for the web and IoT, including in goals, architectures, standards, hardware, and market adoption. It proposes that the "Web of Things" aims to reduce complexity for developers by linking the physical world to the open web ecosystem using open standards and interoperable data models. Connecting IoT to the web could enable more programmable and shared applications and services.
Philippe Coval from Samsung Open Source Group gave a presentation on using JavaScript for IoT applications. He discussed how JavaScript is well-suited for IoT due to its widespread use among web developers. He demonstrated how to set up the IoT.js runtime environment and write simple JavaScript programs to access sensors, communicate over HTTP, and interface with IoT platforms and standards. He also proposed challenges for a hackathon around connecting vehicles to nearby devices using web technologies.
Spawny is a new approach to login capabilities that aims to unify the workflow for developers and users. It provides a text-mode greeter that can be used as a fallback and has no dependencies. Spawny can also be used as a subproject in other projects to set a default greeter. Future goals include monitoring greeter hangups, adding secure lockscreen capabilities, and supporting fingerprint readers.
The document discusses developing a device driver for a USB-SPI bridge chip called the MCP2210 to enable rapid testing of an IEEE 802.15.4 Linux kernel subsystem. Key points include: selecting the MCP2210 due to its cheap board, public datasheet, and existing out-of-tree driver; connecting it to the Linux SPI subsystem; using Virtme tools to enable fast test cycles without rebooting; and the remaining work of simplifying the driver, implementing provisioning, and getting it mainlined.
This document provides an overview and agenda for a presentation on Tizen RT, a lightweight real-time operating system (RTOS) platform for low-end IoT devices. The presentation will cover the technology and features of Tizen RT, how it differs from other RTOS options like NuttX and TinyAra, and how to build and run applications on Tizen RT using examples like building a simple "Hello World" app. It also lists several demos that will be shown, including connecting to WiFi, running MQTT subscriptions, and controlling GPIO pins.
Philippe Coval from Samsung Open Source Group discusses how the automotive industry is becoming more data-driven and connected. The Open Connectivity Foundation is working to provide common standards and open-source implementations for interconnecting Internet of Things devices across different domains, including smart home, automotive, and beyond. IoTivity is an open-source project that implements OCF specifications to allow devices to communicate in a common way. OCF aims to define common resources and interfaces for connected cars to ensure interoperability.
This document discusses Samsung's involvement in open source projects related to automotive and IoT connectivity standards. It provides an overview of the Open Connectivity Foundation (OCF) and its mission to enable interoperability between IoT devices. It also summarizes Samsung's work integrating OCF technologies like IoTivity into automotive platforms and operating systems including Tizen, Automotive Grade Linux (AGL), and the GENIVI development platform.
The document discusses Internet of Things (IoT) interoperability and introduces IoTivity, an open source framework for connecting IoT devices. It describes IoTivity's architecture, which uses standards like CoAP and security protocols to allow different types of devices to communicate. Examples are provided of how IoTivity can be used to build IoT applications that allow devices to discover, control, and send data to each other.
JerryScript: An ultra-lighteweight JavaScript Engine for the Internet of Thin...Samsung Open Source Group
JerryScript is an ultra-lightweight JavaScript engine developed by Samsung for use in Internet of Things devices. It has a small memory footprint of only 3KB and implements the full ECMAScript 5.1 standard. JerryScript runs on microcontrollers and small devices like the Particle Photon. A demo showed a multiplayer Pong game running on a Photon and Raspberry Pi communicating over 6LoWPAN wireless with one device driving each LED display. JerryScript provides a way to use JavaScript and web developers' skills for programming embedded devices.
The document provides an overview of adding IEEE 802.15.4 and 6LoWPAN support to an embedded Linux device. It discusses the motivation, including the header size problem in IEEE 802.15.4 frames and how 6LoWPAN addresses this. It then describes the Linux-wpan project, supported hardware, configuration tools, and communication with RIOT and Contiki operating systems.
JerryScript is a lightweight JavaScript engine optimized for microcontrollers and IoT devices. It has a small base footprint of only 3KB of RAM and implements ECMAScript 5.1. JerryScript parses code directly to compact bytecode without an intermediate representation, uses compressed pointers and value representations to reduce memory usage, and is highly portable across platforms. A demo of a Pong game showed JerryScript running on a microcontroller driving an LED matrix with gameplay shared across devices. Future work will focus on additional optimizations, debugging support, and selected ES6 features.
The document provides an overview of IoTivity, an open source framework for connecting devices. It discusses how IoTivity implements the Open Connectivity Foundation standard to provide seamless discovery and communication between devices. Examples are shown of building an IoTivity server on Arduino and clients on Tizen to create a multi-controlled binary switch that can be read and written to by multiple connected clients. The document encourages exploring IoT development and discusses how IoTivity supports connectivity across various hardware platforms.
This document discusses running your own 6LoWPAN IoT network based on IEEE 802.15.4 standards. It describes the Linux-wpan project which provides native 802.15.4 and 6LoWPAN support in the Linux kernel. It also discusses tools like wpan-tools and communication with other IoT operating systems like RIOT and Contiki. The document covers topics like header compression, link layer security, routing protocols, and the current status and future of the Linux-wpan project.
The document discusses running IEEE 802.15.4 low-power wireless networks under Linux. It describes the linux-wpan project, which provides native support for 802.15.4 radio devices and the 6LoWPAN standard in the Linux kernel. It also discusses the wpan-tools userspace utilities. The document outlines how to set up basic communication between Linux, RIOT and Contiki operating systems for IoT devices using the virtual loopback driver or USB dongles. It also covers link layer security, IPv6 routing protocols like RPL, and areas for future work such as mesh networking support.
Philippe Coval gave a presentation on prototyping IoT devices using GNU/Linux and the IoTivity framework. The presentation covered initializing IoTivity clients and servers, registering resources, discovering resources over the network, and implementing basic GET and POST operations to control resources representing physical devices. Code examples were provided using both C++ for Linux systems and C for resource-constrained MCUs.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdfChart Kalyan
A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfMalak Abu Hammad
Discover how MongoDB Atlas and vector search technology can revolutionize your application's search capabilities. This comprehensive presentation covers:
* What is Vector Search?
* Importance and benefits of vector search
* Practical use cases across various industries
* Step-by-step implementation guide
* Live demos with code snippets
* Enhancing LLM capabilities with vector search
* Best practices and optimization strategies
Perfect for developers, AI enthusiasts, and tech leaders. Learn how to leverage MongoDB Atlas to deliver highly relevant, context-aware search results, transforming your data retrieval process. Stay ahead in tech innovation and maximize the potential of your applications.
#MongoDB #VectorSearch #AI #SemanticSearch #TechInnovation #DataScience #LLM #MachineLearning #SearchTechnology
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
GraphRAG for Life Science to increase LLM accuracyTomaz Bratanic
GraphRAG for life science domain, where you retriever information from biomedical knowledge graphs using LLMs to increase the accuracy and performance of generated answers
How to Get CNIC Information System with Paksim Ga.pptxdanishmna97
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
Monitoring and Managing Anomaly Detection on OpenShift.pdfTosin Akinosho
Monitoring and Managing Anomaly Detection on OpenShift
Overview
Dive into the world of anomaly detection on edge devices with our comprehensive hands-on tutorial. This SlideShare presentation will guide you through the entire process, from data collection and model training to edge deployment and real-time monitoring. Perfect for those looking to implement robust anomaly detection systems on resource-constrained IoT/edge devices.
Key Topics Covered
1. Introduction to Anomaly Detection
- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
- Learn about edge computing and IoT, and how they enable real-time data processing and decision-making at the source.
3. What is ArgoCD?
- Discover ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes, and its role in deploying applications on edge devices.
4. Deployment Using ArgoCD for Edge Devices
- Step-by-step guide on deploying anomaly detection models on edge devices using ArgoCD.
5. Introduction to Apache Kafka and S3
- Explore Apache Kafka for real-time data streaming and Amazon S3 for scalable storage solutions.
6. Viewing Kafka Messages in the Data Lake
- Learn how to view and analyze Kafka messages stored in a data lake for better insights.
7. What is Prometheus?
- Get to know Prometheus, an open-source monitoring and alerting toolkit, and its application in monitoring edge devices.
8. Monitoring Application Metrics with Prometheus
- Detailed instructions on setting up Prometheus to monitor the performance and health of your anomaly detection system.
9. What is Camel K?
- Introduction to Camel K, a lightweight integration framework built on Apache Camel, designed for Kubernetes.
10. Configuring Camel K Integrations for Data Pipelines
- Learn how to configure Camel K for seamless data pipeline integrations in your anomaly detection workflow.
11. What is a Jupyter Notebook?
- Overview of Jupyter Notebooks, an open-source web application for creating and sharing documents with live code, equations, visualizations, and narrative text.
12. Jupyter Notebooks with Code Examples
- Hands-on examples and code snippets in Jupyter Notebooks to help you implement and test anomaly detection models.
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
Let's Integrate MuleSoft RPA, COMPOSER, APM with AWS IDP along with Slackshyamraj55
Discover the seamless integration of RPA (Robotic Process Automation), COMPOSER, and APM with AWS IDP enhanced with Slack notifications. Explore how these technologies converge to streamline workflows, optimize performance, and ensure secure access, all while leveraging the power of AWS IDP and real-time communication via Slack notifications.
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.
Webinar: Designing a schema for a Data WarehouseFederico Razzoli
Are you new to data warehouses (DWH)? Do you need to check whether your data warehouse follows the best practices for a good design? In both cases, this webinar is for you.
A data warehouse is a central relational database that contains all measurements about a business or an organisation. This data comes from a variety of heterogeneous data sources, which includes databases of any type that back the applications used by the company, data files exported by some applications, or APIs provided by internal or external services.
But designing a data warehouse correctly is a hard task, which requires gathering information about the business processes that need to be analysed in the first place. These processes must be translated into so-called star schemas, which means, denormalised databases where each table represents a dimension or facts.
We will discuss these topics:
- How to gather information about a business;
- Understanding dictionaries and how to identify business entities;
- Dimensions and facts;
- Setting a table granularity;
- Types of facts;
- Types of dimensions;
- Snowflakes and how to avoid them;
- Expanding existing dimensions and facts.
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.