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Comments (3)

1 Kenny@cham commented Permalink

It's useful artical for me to resolve my problem.

2 8WDG_RAJA_SUBBU commented Permalink

Hello Ian,
Is this applicable to any "-Xdump" events or applicable only for "-Xdump:heap:events=user" events ?

 
In our environment, we are getting <sys> stanza in our verbose gc logs even though we've -Xdisableexplicitgc in our jvm arguments. Along with Xdisableexplicitgc we got -Xdump:stack:events=allocation,filter=#10m also in jvm arguments.
 
Could -Xdump:stack:events trigger heap dumps whenever there is 10mb + object allocation occurs ?
 
Thank you
R S

3 Ian_Partridge commented Permalink

Hi R S,

 
Setting -Xdump:stack:events=allocation,filter=#10m should not cause forced garbage collections and <sys> stanzas.
 
If you have set -Xdisableexplicitgc and still see <sys> stanzas, please raise a PMR support ticket so IBM can investigate this and tell you why this is occurring.
 
Thanks.

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