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Date: Wed, 08 Feb 2012 16:31:44 +0600
From: "Eugene M. Zheganin" <emz@norma.perm.ru>
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Subject: Re: zfs arc and amount of wired memory
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Hi.

On 08.02.2012 02:17, Andriy Gapon wrote:
> [output snipped]
>
> Thank you.  I don't see anything suspicious/unusual there.
> Just case, do you have ZFS dedup enabled by a chance?
>
> I think that examination of vmstat -m and vmstat -z outputs may provide some
> clues as to what got all that memory wired.
>
Nope, I don't have deduplication feature enabled.

By the way, today, after eating another 100M of wired memory this server 
hanged out with multiple non-stopping messages

swap_pager: indefinite wait buffer

Since it's swapping on zvol, it looks to me like it could be the 
mentioned in another thread here ("Swap on zvol - recommendable?") 
resource starvation issue; may be it happens faster when the ARC isn't 
limited.

So I want to ask - how to report it and what should I include in such pr ?

Thanks.
Eugene.