Help against CMS old gen fragmentation (was: G1GC success examples (compared to CMS) ?)

Chi Ho Kwok chkwok at digibites.nl
Fri Nov 16 03:31:04 PST 2012


On Fri, Nov 16, 2012 at 11:51 AM, Alexey Ragozin
<alexey.ragozin at gmail.com>wrote:

> Besides increasing heap size, tweaking PLABs can reduce fragmentation
> in certain case.
> Here (
> http://blog.ragozin.info/2011/10/cms-heap-fragmentation-follow-up-1.html
>  ) you can find some result from my experiments.
>

Whoa, I didn't know there was a big fragmentation issue in 1.6.0_17-24...
And guess what, I just checked and found some 1.6.0_17's in production,
time to schedule an upgrade. Thanks for the great blog post!

Regards,
> Alexey
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