OSGi Community Event 2016 Presentation by Jan Rellermeyer (IBM), Tim Verbelen (imec) & Jochen Hiller (Deutsche Telekom AG) Eclipse Concierge provides a clean, small and lightweight implementation of the OSGi core framework specification, specifically tailored to embedded systems and IoT. In this talk, we will cover how to use and deploy the Concierge OSGi framework (e.g. using OSGi enRoute), and discuss many of the new and upcoming features in the Concierge project such as the OSGi REST interface and Cloud Ecosystems reference implementations. We will also present our work in progress on implementing the OSGi R6 core specification level and novel demonstrations that illustrate the advantages of having a lean and streamlined OSGi implementation to deal with deployment and dynamism in IoT applications.

1. © 2016 IBM Corporation
EclipseCon Europe
26th October 2016
Getting to the Next Level with
Eclipse Concierge
Jan S. Rellermeyer, IBM Research
Tim Verbelen, iMinds - Ghent University
Jochen Hiller, Deutsche Telekom AG

2. © 2016 IBM Corporation
Important Disclaimers
THE INFORMATION CONTAINED IN THIS PRESENTATION IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY.
WHILST EFFORTS WERE MADE TO VERIFY THE COMPLETENESS AND ACCURACY OF THE INFORMATION
CONTAINED IN THIS PRESENTATION, IT IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED.
ALL PERFORMANCE DATA INCLUDED IN THIS PRESENTATION HAVE BEEN GATHERED IN A CONTROLLED
ENVIRONMENT. YOUR OWN TEST RESULTS MAY VARY BASED ON HARDWARE, SOFTWARE OR INFRASTRUCTURE
DIFFERENCES.
ALL DATA INCLUDED IN THIS PRESENTATION ARE MEANT TO BE USED ONLY AS A GUIDE.
IN ADDITION, THE INFORMATION CONTAINED IN THIS PRESENTATION IS BASED ON IBM’S CURRENT PRODUCT
PLANS AND STRATEGY, WHICH ARE SUBJECT TO CHANGE BY IBM, WITHOUT NOTICE.
IBM AND ITS AFFILIATED COMPANIES SHALL NOT BE RESPONSIBLE FOR ANY DAMAGES ARISING OUT OF THE USE
OF, OR OTHERWISE RELATED TO, THIS PRESENTATION OR ANY OTHER DOCUMENTATION.
NOTHING CONTAINED IN THIS PRESENTATION IS INTENDED TO, OR SHALL HAVE THE EFFECT OF:
- CREATING ANY WARRANT OR REPRESENTATION FROM IBM, ITS AFFILIATED COMPANIES OR ITS OR THEIR
SUPPLIERS AND/OR LICENSORS
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3. © 2016 IBM Corporation
Eclipse Concierge
Goals:
§ Full OSGi core R5 compatibility
§ Goal achieved
§ Keep a small footprint to work well on
embedded devices
§ 250kiB without debug symbols
§ 330kiB with debug symbols
§ Remain “readable”
§ Currently 9 classes
§ Remain backwards-compatible
§ Java 5
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4. © 2016 IBM Corporation
Getting to the Next Level
• Eclipse SmartHome on Concierge
• Concierge and enRoute
• Performance Benchmarks 2016
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Adoption of Concierge for Eclipse SmartHome
=+
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Adoption of Concierge for Eclipse SmartHome
self-contained
tailored to Embedded
small packageTemplate for
other solutions
See packaging sample: https://github.com/eclipse/smarthome-packaging-sample
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7. © 2016 IBM Corporation
How to achieve?
• Pre-configured runtime environment
• Get rid of modeling / DSL features (EMF, xText, DSLs)
• Do not use Karaf feature management
• Reduce footprint of OSGi framework / services (Concierge)
• Reduce footprint of JavaVM (JavaSE Embedded compact 2/3)
• Remove developer tooling (Swagger, WebConsole)
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8. © 2016 IBM Corporation
Adoption of Concierge for Eclipse SmartHome
DEMO
+
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9. © 2016 IBM Corporation
The results of tailoring (typical installation)
Note: Compact 2/3 profile: logback needs cp3, quartz, jersey-min needs Full-JRE
openHAB2 smarthome-concierge
Distribution 160 MB 19 MB
OSGi (no Karaf) 3.1 MB 1.6 MB
EMF/xText 7 MB 0 MB
Java Runtime 32 MB 16 MB (compact3)
12 MB (compact2)
Memory footprint ~32 MB ~15 MB
Startup time ~40 sec ~30 sec
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10. © 2016 IBM Corporation
Concierge & bnd(tools) / enRoute
OSGi enRoute uses OSGi R6 and bndtools
→ R6 implementation of Concierge available as snapshot
→ OSGi repository hosted at the Concierge website
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11. © 2016 IBM Corporation
OSGi Frameworks
Eclipse Equinox
• version 3.11.1.v20160708-1632
• 1.3 MiB
• (R6 framework)
Apache Felix
• version 5.6.0
• 678 kiB
Knopflerfish
• version 5.2.1
• 321kiB compact
Concierge
• version 5.0.0
• 245kiB
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<concierge.git>/tests/org.eclipse.concierge.stresstest

12. © 2016 IBM Corporation
Platforms
Beaglebone Rev A5
• AM335x 720MHz ARM Cortex-A8
• 256 MiB DDR2 RAM
• 4 GiB microSD card
• Angstrom Linux
• Java SE Embedded 1.7.0_21-b11 and
• Java SE Embedded build 1.8.0_06-b23 compact1
Raspberry Pi B
• ARM1176JZF-S 700 MHz ARM 11
• 512 MiB SDRAM (shared with GPU)
• 8 GiB SDHD card
• Raspbian Linux
• Java SE build 1.8.0-b132
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Image: http://beaglebone.org

13. © 2016 IBM Corporation
Startup Time
VM = startup time of the JVM
Concierge is consistently the fastest
framework in terms of startup
time
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Concierge
Equinox
Felix
Knopflerfish

14. © 2016 IBM Corporation
Service Registry
Stress test
Register 10000 services
• Each one has a random value for the same key
• Range: byte => collisions
Perform 1000 lookups (getServiceReferences) for a random value
• Range: byte
Unregister the 10000 services
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Registry

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Service Registry
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Registration Unregistration

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Service Registry – Service Lookup
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Resolver
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Generate 1000 “random bundles”
• Can either import or export up to 5 packages
• Choice of 50 packages in total
• For exports: generate a random package version from [1.0.0-21.0.0)
• For import: generate a random import range from the interval.
Install all 1000 bundles
Resolve the bundles
Benchmark turned out to be rather volatile…

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Resolver
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Installation Resolving
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What’s next?
• More auxiliary bundles
• Remote services?
• Help other projects with transitioning to Concierge
• Short term:
• Move to Github
• Concierge R5.1 Release
• EventAdmin
• RFC 182: Remote management based on REST interface
• Medium term:
• RFC 183: Cluster Information Specification
• R6 compatibility
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20. © 2016 IBM Corporation
Eclipse Concierge
Concierge is an OSGi framework optimized
for embedded devices and the
Internet of Things
It’s simplicity and usability can help with
developing complex IoT applications
with ease.
It’s fast, it’s pleasant, you should try it, too.
http://eclipse.org/concierge
http://git.eclipse.org/c/concierge/org.eclipse.concierge.git
Project
Homepage
Clone it
from here
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