Re: [PATCH] modified segq for 2.5

Daniel Phillips
2002-09-09T22:46:50Z

On Monday 09 September 2002 11:38, Andrew Morton wrote:
> One thing this patch did do was to speed up the initial untar of
> the kernel source - 50 seconds down to 25. That'll be due to not
> having so much dirt on the inactive list. The "nonblocking page
> reclaim" code (needs a better name...)

Nonblocking kswapd, no? Perhaps 'kscand' would be a better name, now.

> ...does that in 18 secs.

Woohoo! I didn't think it would make *that* much difference, did you
dig into why?

My reason for wanting nonblocking kswapd has always been to be able to
untangle the multiple-simultaneous-scanners mess, which we are now in
a good position to do. Erm, it never occurred to me it would be as easy
as checking whether the page *might* block and skipping it if so.

--
Daniel