abnormally high CPU load after zfs destroy

Bob Friesenhahn bfriesen at simple.dallas.tx.us
Wed Mar 2 02:51:04 UTC 2016


On Tue, 1 Mar 2016, Miroslav Lachman wrote:

> Steven Hartland wrote on 02/29/2016 22:21:
>> Its likely churning through the actual delete, show system processes in
>> top and you'll see it.
>
> Yes, there are about 300 kernel thread doing ZFS work, but should it really 
> bomb the system that way? The system is heavilly lagging for about 10 
> minutes. Are there any sysctl to control this behavior?

Is it possible that you enabled the dedup feature?

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/


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