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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
CreateCount threadPoolModule.threadCreates The total number of threads created Per thread pool CountStatistic All Low
DestroyCount threadPoolModule.threadDestroys The total number of threads destroyed Per thread pool CountStatistic All Low
ActiveCount threadPoolModule.activeThreads The number of concurrently active threads Per thread pool BoundedRangeStatistic Extended High
PoolSize threadPoolModule.poolSize The average number of threads in pool Per thread pool BoundedRangeStatistic Basic High
PercentMaxed threadPoolModule.percentMaxed The average percent of the time that all threads are in use Per thread pool BoundedRangeStatistic All High
DeclaredthreadHungCount threadPoolModule.declaredThreadHung The number of threads declared hung Per thread pool CountStatistic All Max
ClearedThreadHangCount threadPoolModule.declaredThreadHangCleared The number of thread hangs cleared Per thread pool CountStatistic All Max
ConcurrentHungThreadCount threadPoolModule.concurrentlyHungThreads The number of concurrently hung threads Per thread pool BoundedRangeStatistic All Max
ActiveTime threadPoolModule.activeTime The average time in milliseconds the threads are in active state Per thread pool TimeStatistic All Max

 

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