Initial mark times

[Florian Binder]

Hi Bernd,

your posted gc log shows that you have less than 2.5G of live data (in 
old generation).
Is the application still in startup phase?
In this situation I would bet ParallelOldGC would be faster than 12s ;-)

I am wondering what the concurrent collection triggered?
Maybe your perm gen is full/too small?

-Flo


Am 01.10.2012 22:04, schrieb Bernd Eckenfels:
> Hello Florian,
>
> On Mon, Oct 1, 2012 at 7:43 PM, Florian Binder <java at java4.info> wrote:
>> The initial marking is done single threaded and therefore takes a lot of
>> time.
>> Your initial-mark phase ended at 11:05:33. It stopped the world for
>> about 12 seconds (started at 11:05:21).
>> The "Finished cms..." information is for the concurrent marking phase
>> which took 0.61 sec.
> Oh ok, makes sense. That was missleading me. Yes right, it is single
> threaded sadly.
>
>> Have you tried to reduce your young generation? Maybe 1gb is enough?
> It is unfortunatelly not a system where I can experiment. I already
> reduced it a bit, but I guess I really
> have to go to 10s frequency (and adjust –XX:CMSWaitDuration= ).
>
> Greetings
> Bernd
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