We had a need to see which threads were running on a given CPU, as utilization was not balanced amongst the cores.<\/p>\n
We used what is below to do so. In our case, our java PID was 488.<\/p>\n
\r\n-bash-4.1$ jstack 488 > l.txt; for p in $(ps -eL -o pid,psr,lwp | grep 488 | awk '$2 == 0 {print $NF}'); do\r\n> PID=$(printf \"%x\\n\" $p)\r\n> grep \"nid=0x${PID}\" l.txt\r\n> done | awk '{gsub(\"[0-9]\",\"\",$1); print $1}' | sort | uniq -c | sort -n\r\n 1 \"ajp-...--Acceptor-\"\r\n 1 \"\/atg\/deployment\/file\/FileDeploymentServer-ConnectionAcceptor\"\r\n 1 \"\/atg\/dynamo\/server\/SQLRepositoryEventServer_production-ConnectionAcceptor\"\r\n 1 \"\/atg\/dynamo\/server\/SQLRepositoryEventServer_production-SendAsynchronousGSAEventThread\"\r\n 1 \"\/atg\/dynamo\/server\/SQLRepositoryEventServer-SendAsynchronousGSAEventThread\"\r\n 1 \"\/atg\/dynamo\/service\/ClientLockManager-MessageReadingThread\"\r\n 1 \"\/atg\/dynamo\/service\/ClientLockManager_production-MessageReadingThread\"\r\n 1 \"\/atg\/dynamo\/service\/GSACacheClientManager-MessageReadingThread\"\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-\/atg\/epub\/file\/ConfigEmptyDirDeleter-folderCleanup\"\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-JMS-POLL\"\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-MSG-LIMBO-POLL\"\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-null\"\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-OrderSharderRotationServcie\"\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-PlaceScheduledOrders\"\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-Reset\r\n 1 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-SitemapWriterService\"\r\n 1 \"\/atg\/reporting\/datacollection\/commerce\/ClaimableLogEntryQueueSink-\"\r\n 1 \"\/atg\/reporting\/datacollection\/commerce\/OrderLogEntryQueueSink-\"\r\n 1 \"\/atg\/reporting\/datacollection\/search\/EnvironmentLogEntryQueueSink-\"\r\n 1 \"\/atg\/reporting\/datacollection\/search\/QueryLogEntryQueueSink-\"\r\n 1 \"Attach\r\n 1 \".data\"\r\n 1 \"Gang\r\n 1 \"IdleRemover\"\r\n 1 \"JBossLifeThread\"\r\n 1 \"JCA\r\n 1 \"JmDNS.SocketListener\"\r\n 1 \"MultiThreadedHttpConnectionManager\r\n 1 \"net.sf.ehcache.CacheManager@ba\"\r\n 1 \"New\r\n 1 \"QueueItemChangedThread\"\r\n 1 \"Thread-\"\r\n 2 \"http-...--Acceptor-\"\r\n 2 \"RMI\r\n 3 \"\/atg\/dynamo\/service\/Scheduler-reusablejobhandler-reinitialize\r\n 19 \"\/atg\/dynamo\/server\/SQLRepositoryEventServer_production-\"\r\n 41 \"pool--thread-\"\r\n 81 \"http-...--\"\r\n 93 \"\/atg\/dynamo\/server\/SQLRepositoryEventServer-\"\r\n-bash-4.1$\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"We had a need to see which threads were running on a given CPU, as utilization was not balanced amongst the cores. We used what is below to do so. In our case, our java PID was 488. -bash-4.1$ jstack…<\/p>\n