[OpenIndiana-discuss] Mitigating the performance impact of scrub

[Reginald Beardsley]

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.

Thanks,
Reg