Re: [RFC][PATCH] avoid swapping out with swappiness==0

From: Richard Davies
Date: Thu Apr 26 2012 - 10:26:52 EST


Satoru Moriya wrote:
> > I have run into problems with heavy swapping with swappiness==0 and
> > was pointed to this thread (
> > http://marc.info/?l=linux-mm&m=133522782307215 )
>
> Did you test this patch with your workload?

I haven't yet tested this patch. It takes a long time since these are
production machines, and the bug itself takes several weeks of production
use to really show up.

Rik van Riel has pointed out a lot of VM tweaks that he put into 3.4:
http://marc.info/?l=linux-mm&m=133536506926326

My intention is to reboot half of our machines into plain 3.4 once it is
out, and half onto 3.4 + your patch.

Then we can compare behaviour.


Will your patch apply cleanly on 3.4?

Richard.
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