> This is the profile of a 2.4.19-rc3-ac4 after a heavy disk /swap usage.
> I send it because it seems that page_referenced takes a lot of time....
That might well be because it's being called a LOT, since in
a disk/swap intensive workload we want to make very sure we
evict the right page from RAM.
A disk seek is worth about ten million CPU cycles...
> 607951 default_idle 15198,7750
> 1019 page_referenced 16,9833
> 831 serial_in 15,9808
> 406 __rdtsc_delay 14,5000
> 836 unlock_page 6,3333
Rik
-- Bravely reimplemented by the knights who say "NIH".http://www.surriel.com/ http://distro.conectiva.com/
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