CMS output description

Andrew Haley aph at redhat.com
Mon Apr 15 01:51:15 PDT 2013


On 04/13/2013 09:37 PM, Venkateswarlu Mandadi wrote:
> We are using CMS collector for oldgen (large heap -Xmx18g) and we have
> observed there is a long whole world stop, in GC logs it was observed that
> GC times are looking alright, but Times: Usr showing around more than 3
> mins.
> 
> Can someone explain Times fields
> 
> Times: user=0.45 sys=0.00, real=0.09 secs

Linux?  It's probably related to a kernel bug that misreports CPU time
spent in page migration.

Andrew.



More information about the jdk6-dev mailing list