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Coherence Monitoring 101
Everett Williams
Senior Director of Technology
March 3rd 2015

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Agenda
• Introduction
• Business Value of Monitoring
• Preparing Coherence to be Monitored.
• Understanding Cluster Stability
• Understanding Cache Utilization

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© 2012 SL Corporation. All Rights Reserved.
SL – who we are
• 1983: Founded in SF Bay Area to provide
visualization of complex, mission-critical
systems (SL-GMS®)
• Evolution: industry leaders in monitoring
and visualization of enterprise
applications, middleware and cloud
• Today: extensive portfolio of Fortune
1000 customers who depend on SL
solutions for real-time, end-to-end
visibility

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Enterprise Monitor Coherence Support
• Tangosol partnership 2006
• RTView Oracle Coherence Monitor 2007
• RTView Oracle Coherence Viewer 2008
• Specialty in monitoring large and/or complex Coherence
implementations

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Business Value of Monitoring
• Higher Customer Satisfaction
• Maximizing Technology Investments.
• Improved Technology Risk Management.
• Reduced outages
• Faster Mean Time to Repair

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Monitoring Features.
• Health monitoring (alerting)
• Scalability
• Event Analysis
• Bottleneck Analysis
• Capacity Analysis
• Usage and performance Analysis
• Task Analysis (threads)
• Client Analysis (proxy)
• Tuning Analysis (JVM GC).
• Coherence Optimized JMX Data Collection
• Coherence Optimized Data Visualization

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Coherence Monitoring Components
• Coherence Management Service
• Java Management Extensions (JMX)
• SL RTView Oracle Coherence Monitor

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Coherence Monitoring Architecture
JMX
RTView
Dataserver
RDBMS
RTView
DisplayServer
Coherence
JMX
Coherence
RTView
Dataserver

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Coherence Monitoring Architecture
S
N
JMX
RTView
Dataserver
RDBMS
RTView
DisplayServer
Coherence
JMX
Coherence
RTView
Dataserver

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Enabling JMX within Coherence
• cache-server –jmx
Or
• -Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=9099
-Dtangosol.coherence.management=all
-Dtangosol.coherence.management.remote=true
And
• -Dtangosol.coherence.management.remote=true
http://docs.oracle.com/cd/E18686_01/coh.37/e18682/jmx.htm#COHMG239

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Coherence Stability
• TCMP
• Memory
• Thread Backlog

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Coherence Utilization
• Gets/Puts
• Tasks/Requests
• Proxy Clients

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Demo

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Question

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March 24th :
Architectural choices
for addressing
dynamic application
requirements

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