QueueMetrics forum

QueueMetrics => Running QueueMetrics => Topic started by: coolname on December 21, 2011, 02:52:46

Title: queuemetrics will eat all the cpus after a long running
Post by: coolname on December 21, 2011, 02:52:46

in top,i see java process use 393% cpu after a long time running,should i restart queuemetrics everyday?

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: patrick on January 05, 2012, 18:07:30

I have the same problem.  Java mem has been increased but still no change.  this happens at the same time every working day.
I have noticed that there are almost 200 sessions within mysql, these processes are usually terminated after 10 to 30 seconds but when we have 'issues' the process stack builds and builds until we have too many sessions for mysql.

What kind of diagnostics do I take? mysql, java or qm itself?

Any help would be nice.

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: QueueMetrics on January 18, 2012, 18:09:13

Taking a thread dump is the only way to know what's actually going on.
Most likely, you are sending QM too many requests (or it's too slow to fetch data to process them, but it's the same thing) so it lags behind. Try avoiding having too many realtime screens open.

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: coolname on March 13, 2012, 06:46:36

through threaddump，i get the below process eats too many cpus


"http-8080-4" daemon prio=10 tid=0x09e01c00 nid=0x192e runnable [0x0b969000]
   java.lang.Thread.State: RUNNABLE
   at it.loway.tpf.common.containers.LContext.eliminaPrefisso(LContext.java:237)
   at it.loway.tpf.transaction.servlets.LowayTransactionController.pulisceChiavi(LowayTransactionController.java:886)
   at it.loway.tpf.transaction.servlets.LowayTransactionController.serveRequest(LowayTransactionController.java:557)
   at it.loway.tpf.transaction.servlets.LowayTransactionController.serveRequestWrapper(LowayTransactionController.java:387)
   at it.loway.tpf.transaction.servlets.LowayTransactionController.doPost(LowayTransactionController.java:238)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
   at java.lang.Thread.run(Thread.java:662)

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: coolname on April 08, 2012, 04:05:38

after change into centos 6.2 64bit，mem 8GB,the problem has gone

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: QueueMetrics on April 10, 2012, 12:49:04

Nice to see it's fixed.

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: coolname on April 25, 2012, 11:24:43

after run about 20 days,it occured agagin

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: QueueMetrics on April 27, 2012, 15:28:14

Do you run a programmed restart of the server?

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: coolname on May 04, 2012, 15:45:42

no ,i manually restart the qm

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: QueueMetrics on May 09, 2012, 13:32:59

We usually suggest doing a programmed restart just to be on the safe side of things.
BTW, in the upcoming release, we spotted a threading issue that would cause high CPU spikes; this is fixed in 12.05, so it would be wise to upgrade.

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: coolname on May 10, 2012, 03:30:12

really? :D :D :D when would it realeased?

Title: Re: queuemetrics will eat all the cpus after a long running
Post by: QueueMetrics on May 10, 2012, 13:10:49

Next week or so. We are finalizing changes and doing final testing.