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Date: Mon, 25 Aug 2014 10:09:49 +0800
Message-ID: <CAGQ70ethmJwvMOCzOLMMnML65sUkGiog9Ek6DB_HaH9V9MVQJg@mail.gmail.com>
Subject: Re: 6+ MiB/s constant usage on a btrfs volume with kernel 3.16
From: Oon-Ee Ng <ngoonee.talk@gmail.com>
To: =?UTF-8?Q?Holger_Hoffst=C3=A4tte?=
	<holger.hoffstaette@googlemail.com>
Cc: linux-btrfs@vger.kernel.org
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On Mon, Aug 25, 2014 at 8:05 AM, Oon-Ee Ng <ngoonee.talk@gmail.com> wrote:
> On Mon, Aug 25, 2014 at 2:08 AM, Holger Hoffstätte
> <holger.hoffstaette@googlemail.com> wrote:
>>
>> iosnoop:
>> http://www.brendangregg.com/blog/2014-07-16/iosnoop-for-linux.html
>>
>> Probably either a continuing balance or autodefrag vs. systemd's logging.
>
> Thank you, I'll try that out.
http://tny.cz/da4d5338 shows the problem, and for comparison this is a
30 second iosnoop log from 3.15.8 where I do not experience this issue
http://pastebin.com/8EjKiAuf