Re: Thinko in kswapd?

Mike Galbraith (mikeg@wen-online.de)
Thu, 22 Mar 2001 19:22:08 +0100 (CET)


On Thu, 22 Mar 2001, Alan Cox wrote:

> > pull it all right back in again. It continues through the entire
> > build with the cost seen in the time numbers. (the ac20.virgin run
> > was worse by 30 secs than average, but that doesn't matter much)
>
> Using my reference interactive test (An application which renders 3D graphics
> and generates fairly measurable VM traffic with AGP texture mapping)[1] the
> graphical flow is noticably stalling where it didn't before.
>
> Throughput seems to be up but interactivity is bad.

If you set the amount that kswapd goes after to be a fraction of
inactive_target and leave Stephens change in but ensure that a
schedule happens between loops, IIRC interactive is pretty nice
while swapping. (haven't tried that particular variant in a while)

-Mike

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