Date: Mon, 10 Mar 2014 17:51:39 -0000 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Adrian Gschwend" <ml-ktk@netlabs.org>, "Adam Vande More" <amvandemore@gmail.com> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: Reoccuring ZFS performance problems Message-ID: <1CF0F10D59CB4999B18D0922C232ED43@multiplay.co.uk> References: <531DF0DD.8070809@netlabs.org> <CA%2BtpaK1q8KRVB5HTMiu_Szy0XnbLMKzXKa4PC=USj05C4WFE7A@mail.gmail.com> <531DF82F.3010607@netlabs.org>
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----- Original Message -----
From: "Adrian Gschwend" <ml-ktk@netlabs.org>
To: "Adam Vande More" <amvandemore@gmail.com>
Cc: "freebsd-fs" <freebsd-fs@freebsd.org>
Sent: Monday, March 10, 2014 5:36 PM
Subject: Re: Reoccuring ZFS performance problems
> On 10.03.14 18:27, Adam Vande More wrote:
>
> Hi Adam,
>
>> Are you using a ZFS backed swap device?
>
> does not look like:
>
> 34 419430333 vtbd0 GPT (200G)
> 34 128 1 freebsd-boot (64k)
> 162 8388608 2 freebsd-swap (4.0G)
> 8388770 411041597 3 freebsd-zfs (196G)
If your hitting swap you'll likely hit a performance wall, does
top show any swapping in or are you just seeing slow swap out
of unused processes?
Regards
Steve
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