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SubjectRe: experiences with 2.5.40 on a busy usenet news server
Miquel van Smoorenburg wrote:
>
> ...
> # free
> total used free shared buffers cached
> Mem: 1033308 1027316 5992 0 836884 29776
> -/+ buffers/cache: 160656 872652
> Swap: 976888 364032 612856

Please always send /proc/meminfo - it's way more informative.

A vmstat trace is also useful.

> No need to swap 364 MB when there's 872 MB still free...
> This makes the machine dogslow. An 'expire' process that
> runs every night normally takes 15 minutes to finish now
> has been running for 10 hours and its still not finished.

It must be doing a ton of IO?

You'll probably find that 2.5.41-mm1 does not swap at all; but
I'd need to see meminfo to know.
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