Re: [ck] 2.6.7 backport request, spinoff idea

[Con Kolivas]

Mikhail Ramendik wrote:
> Con Kolivas wrote:
>
>
> > Actually I wonder if the swap token is responsible in 2.6.10-rc3
> >
> > Try this
> > echo 0 > /proc/sys/vm/swap_token_timeout
>
>
> Well, this makes things really better, although not as good as 2.6.8.1. There 
> are kswapd cpu jumps and screen freezes, but they only last several seconds 
> (the longest is in the very beginning, about 15-20 sec).
>
> Thanks! This makes the system much more useable.

This is worth posting to lkml so I've cc'ed a few relevant people (there 
is already a thread about this there). Rik care to comment? I recall 
pointing out this test case a while back. Got any way to make it harder 
to trigger the swap token? It seems to affect normal workloads adversely 
considering how rare swap thrashing actually occurs.

Con

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