[OmniOS-discuss] Slow scrub on SSD-only pool

Stephan Budach stephan.budach at JVM.DE
Fri Apr 22 17:45:51 UTC 2016

Am 22.04.16 um 19:28 schrieb Dan McDonald:
>> On Apr 22, 2016, at 1:13 PM, Richard Elling <richard.elling at richardelling.com> wrote:
>> If you're running Solaris 11 or pre-2015 OmniOS, then the old write throttle is impossible
>> to control and you'll chase your tail trying to balance scrubs/resilvers against any other
>> workload. From a control theory perspective, it is unstable.
> pre-2015 can be clarified a bit:  r151014 and later has the modern ZFS write throttle.  Now I know that Stephen is running later versions of OmniOS, so you can be guaranteed it's the modern write-throttle.
> Furthermore, anyone running any OmniOS EARLIER than r151014 is not supportable, and any pre-014 release is not supported.
> Dan
…and I am actually fine with the new controls/tunables, so there's 
aboslutely no fuss here. ;) Plus, I actually understood, how both work, 
which is a plus…


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