zpool scrub speed

Fajar A. Nugraha list at fajar.net
Sat May 7 18:15:34 EDT 2011


On Sun, May 8, 2011 at 5:09 AM, devsk <devsku at gmail.com> wrote:
> So, it looks like scrub speed is also
> determined by how much memory is fragmented i.e. on a box which is
> freshly booted, things are generally faster and as the time goes on
> and zfs allocates and arc_reclaim eventually reclaims memory
> repeatedly, things begin to slow down.

Is the lockup reproducable? Can your repeat the process, but this time
setting zfs_arc_max and zfs_arc_min to the same value (something like
128M or whatever sane value depends on your memory size) thru module
parameter?

-- 
Fajar



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