[OpenIndiana-discuss] Mitigating the performance impact of scrub

Reginald Beardsley pulaskite at yahoo.com
Thu Sep 27 15:44:36 UTC 2012

The only thing google turned up was "stop the scrub if it impacts performance too badly" which is not really all that helpful. Or ways to speed up scrubs & resilvers.

In my case, I'd like to be able to run a scrub and have all the performance hits taken by the scrub process if the system has other loads.  I care that the scrub runs, but not how fast.

>From observed behavior, it appears that the scrub is consuming too large a share of DRAM (12 GB in this case).  Is that correct and if so, is there a way to limit the proportion of memory used by the scrub process?

I'd like to be able to schedule scrubs regularly, but the present behavior would require predicting when I didn't want to use the system for work.


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