Long ParNew Collection Time

[Shay Banon]

 I ran vmstat and did not see any swap going on (si/s0 are 0, swap is 0), are you suggesting that it might still be swapping?
On Tuesday, January 11, 2011 at 3:21 PM, Chi Ho Kwok wrote:

> 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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