Thread pool counters

You can use the thread pool counters that the Performance Monitoring Infrastructure (PMI) and Tivoli Performance Viewer (TPV) collect to monitor your thread pool activity.

Counter definitions

Name Key Description Granularity Type Level Overhead ID
ActiveCount threadPoolModule.activeThreads The number of concurrently active threads
Note: The ActiveCount value can include a count for a long-running thread that is used for asynchronous I/O. Under these circumstances, it is possible that even when there is no apparent activity on the thread pool, the ActiveCount value will never reach zero
Per thread pool BoundedRangeStatistic Extended High 3
ActiveTime threadPoolModule.activeTime The average time in milliseconds the threads are in active state Per thread pool TimeStatistic All Max 9
ClearedThreadHangCount threadPoolModule.declaredThreadHangCleared The number of thread hangs cleared Per thread pool CountStatistic All Max 7
ConcurrentHungThreadCount threadPoolModule.concurrentlyHungThreads The number of concurrently hung threads Per thread pool BoundedRangeStatistic All Max 8
CreateCount threadPoolModule.threadCreates The total number of threads created Per thread pool CountStatistic All Low 1
DeclaredthreadHungCount threadPoolModule.declaredThreadHung The number of threads declared hung Per thread pool CountStatistic All Max 6
DestroyCount threadPoolModule.threadDestroys The total number of threads destroyed Per thread pool CountStatistic All Low 2
PercentMaxed threadPoolModule.percentMaxed The average percent of the time that all threads are in use Per thread pool BoundedRangeStatistic All High 5
PoolSize threadPoolModule.poolSize The average number of threads in pool Per thread pool BoundedRangeStatistic Basic High 4



Related tasks
Monitoring overall system health
Related reference
PMI data organization
Reference topic    

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Last updated: Sep 20, 2010 11:08:29 PM CDT
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