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SubjectRe: VM: Linus versus ArcA on kernel compiles in 64MB
On Sun, 3 Jan 1999, Benjamin Redelings I wrote:

> telomere:/proc/sys/vm> cat pagecache
> 1 30 75
> telomere:/proc/sys/vm> cat buffermem
> 1 20 60

I should have told that to you before. The pgcache_min limit to 5% is
something that will improve performance (at least with hight memory)
because it will avoid your latest caching part of the page cache and
buffers to be shrinked.

My latestlatest patch I posted here is reported to be a little slower than
the previous . This should be due to the swapout weight change. We was
used to be very more aggressive in swap_out(). So I am now changing >>
priority to >>(priority>>1). This will cause the swapout code to be more
aggressive. This make sense since when shrink_mmap() fail we like more to
swapout at the first try than shrink_mmap() with higher priority at the
next try...

The shrink_mmap() change instead seems to improve performances.

Andrea Arcangeli


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