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SubjectRe: ~500 megs cached yet 2.6.5 goes into swap hell


Paul Jackson wrote:

> Heh - indeed perhaps the answer is closer than I realize. For SGI's big
> NUMA boxes, managing memory placement is sufficiently critical that we
> are inventing or encouraging ways (such as Andi Kleen's numa stuff) to
> control memory placement per node per job. Perhaps this needs to be
> extended to portions of a node (this job can only use 1 Gb of the memory
> on that 2 Gb node) and to other memory uses (file cache, not just user
> space memory).
>

Is updatedb run with a nice level greater than zero?

Perhaps nice level could influence how much a process is allowed to
affect page cache.

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