CMS collection keep working during holiday dragonken at
Thu Oct 9 04:49:56 UTC 2008

Thanks to your quick response.

This command option is very useful. I was trying to find a way to manually
trigger full gc with DisableExplicitGC turned on :>

Attached the live histo. histo3.txt 

Thanks and Best Regards,

Y Srinivas Ramakrishna wrote:
> Hi Ken --
>> Actually jmap -histo is my first step for trouble shooting at the very
>> beginning. Why there are so many wierd instance is because I have this 
>> flag:
>> -XX:+DisableExplicitGC
>> With this flag turned on, all calls to System.gc() is ignored even you 
>> press
>> the 'Perform-GC' button in Jconsole. Removing this flag will have a much
>> clear histo. I will cap a histo (without this flag turned on) and post 
>> here
>> tomorrow.
> If you use jmap -histo:live <pid> from the command-line you will
> get a full gc before the histogram is computed. This full gc will
> be done despite having +DisableExplicitGC.
> -- ramki

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