1. Monitoring services
with
SALMon

2. SALMon
Monitoring and quality assessment framework for services
GESSI: SALMon
 Monitoring QoS of services
 Check for SLA violations
 Notify the interested parties
2

3. SALMon
GESSI: SALMon
Main features and characteristics:
Technology
agnostic design
Monitoring
and Testing
Extensible
add metrics
Easily
interoperable
3

4. SALMon
The framework
SALMon
GESSI: SALMon
tester
monitor
SOAP
REST
···
serv. user
Service
4

5. SALMon
Implemented as a Service Oriented System itself.
GESSI: SALMon
Monitor service
 measure instruments
Analyzer service
5

6. SALMon
GESSI: SALMon
SALMon architecture
6

7. SALMon
GESSI: SALMon
Current monitored metrics
 Response Time
 Current
R.T.
 Average R.T.
 Maximum R.T.
 Minimum R.T.
 Round-trip time
 Current
RTT
 Average RTT
 Maximum RTT
 Minimum RTT
 Execution Time
 Current
E.T.
 Average E.T.
 Maximum E.T.
 Minimum E.T.
 Availability
 Current
Avail.
 Other
 Input
 Output
7

8. SALMon
GESSI: SALMon
SALMon in S-Cube
Usage-based
Online testing
Monitoring
the cloud
Monitoring
WS-Agreements
Self-Adaptive
SBAs
SALMon in UPC
Service
selection
Prediction
accuracy
8

9. SALMon
Sept
2009
Usage-based
Online testing
GESSI: SALMon
Monitoring
WS-Agreements
Monitoring
the cloud
Jan
2010
Sept
2010
Jan.
2011
Sept
2011
Jan
2012
Integration tests
Prototype available
Prototype developed,
experiments conducted
Conceptual design - simulations
Self-Adaptive
SBAs
Prototype available
Service
selection
Prototype available
Prediction
accuracy
9

10. Usage-based Online testing
GESSI: SALMon
Augment monitoring data with testing to perform
analysis with more QoS data.
10

11. Monitoring WS-Agreements
GESSI: SALMon
Check the fullfilment of SLAs specified in WS-Agreement
at runtime
user
S
A
L
M
O
N
A
D
A
Service
11

12. Monitoring the cloud
GESSI: SALMon
Determine the QoS of cloud systems in order to select
the best cloud.
12

13. Self-Adaptive SBAs
GESSI: SALMon
Monitor the constituent services of an SBA to enable
Self-Adaptive SBAs
13

14. Service Selection
GESSI: SALMon
Monitor the QoS of services to provide a service selection
framework based on the Non-Functional Requirements
14

15. Prediction accuracy
GESSI: SALMon
Monitor the results of predictive services and compare
them automatically with services providing the
information once the predicted events have occurred.
15

16. Conclusions
SALMon
GESSI: SALMon
 Implemented as Service Based System
 Services: Monitor, Analyzer
 Easy integration with other frameworks
 Several features
 Technology agnostic
 Combines monitoring and testing
 Extensible with new metrics
 Used in different frameworks
 Applied in 6 projects from S-Cube and UPC
 Supports several distinct objectives
16

17. Thanks for your attention
http://gessi.lsi.upc.edu/salmon