Re: 2.6.0-test9 - poor swap performance on low end machines

Roger Luethi
2003-12-17T11:04:46Z

On Tue, 16 Dec 2003 11:29:50 -0500, Rik van Riel wrote:
> On Tue, 16 Dec 2003, Roger Luethi wrote:
>
> > One potential problem with the benchmarks is that my test box has
> > just one bar with 256 MB RAM. The kbuild and efax tests were run with
> > mem=64M and mem=32M, respectively. If the difference between mem=32M
> > and a real 32 MB machine is significant for the benchmark,
>
> Could you try "echo 0 > /proc/sys/vm/lower_zone_protection" ?

Defaults to 0 anyway, doesn't it? Turning it _on_ seems to slow
benchmarks down somewhat (< 5%). In one of ten runs, though, the efax
test stopped doing anything for ten minutes -- no disk activity, no
progress whatsoever.

Roger