Long ParNew Collection Time

[Chi Ho Kwok]

On Tue, Jan 11, 2011 at 2:05 PM, Shay Banon <kimchy at gmail.com> wrote:

>  I will give it a go. Are you suggesting that its just a time reporting
> problem, and there is no actual long GC? It does correlate with the system
> hanging and not doing anything during that time (not responding to any
> requests from clients).
>
> -shay.banon
>

Did you set vm.swappiness = 0 in sysctl? Linux tends to swap out inactive
regions of RAM, which takes forever to swap in again if the garbage
collector touches that area after a while. free -m must show swap used at
near zero, otherwise you're the victim of pro active swapping.

Chi Ho Kwok
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