Date: Wed, 08 Feb 2012 16:31:44 +0600 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: freebsd-stable <freebsd-stable@FreeBSD.org> Subject: Re: zfs arc and amount of wired memory Message-ID: <4F324F10.2060508@norma.perm.ru> In-Reply-To: <4F3186C6.8000904@FreeBSD.org> References: <4F30E284.8080905@norma.perm.ru> <4F310115.3070507@FreeBSD.org> <4F310C5A.6070400@norma.perm.ru> <4F310E75.7090301@FreeBSD.org> <4F3144A9.2000505@norma.perm.ru> <4F314892.50806@FreeBSD.org> <4F314B5B.100@norma.perm.ru> <4F3186C6.8000904@FreeBSD.org>
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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.
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