On Tue, Aug 18, 2015 at 11:57 AM, Mark Thomas <ma...@apache.org> wrote:
> On 18/08/2015 16:50, musafir wrote: > > Hello, ugraded tomcat from 6.0.36(jdk 6) to tomcat7.0.57 (jdk7).. > > os:centos 6.6 ...seeing high cpu spike after upgrade.... doing top > > and thread dump shows only thread that is always using cpu is: > > How have you matched the thread using CPU in top with the thread in the > thread dump? > > Mark > > > > "ContainerBackgroundProcessor[StandardEngine[Catalina]]" daemon > > prio=10 tid=0x00007ff8fc599800 nid=0xc1d2e waiting on condition > > [0x00007ff803ffe000] > > java.lang.Thread.State: TIMED_WAITING (sleeping) > > at java.lang.Thread.sleep(Native Method) > > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1513) > > at java.lang.Thread.run(Thread.java:745) > > > > disabled backgroundProcessorDelay (backgroundProcessorDelay=-1) > > ..don't see any thread that is always using cpu.. > > > > Q: why backgroundProcessorDelay will cause cpu spike. Is this disabled > > in tomcat6 by default? > > Q: will disabling backgroundProcessorDelay cause any other > > performance issues with tomcat7. > > > > > > Thanks for Help!! > > > > Regards > > > > Hi Mark > pid java > > top -H -p pid for thread id cpu eating thread > > kill -3 pid for thread dump > > and hexa nid for thread id > > > Regards > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
