Re: [PATCH 0/3] support appending AIO writes

xfs

Re: [PATCH 0/3] support appending AIO writes

To:	Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject:	Re: [PATCH 0/3] support appending AIO writes
From:	Sergey Meirovich <rathamahata@xxxxxxxxx>
Date:	Wed, 5 Feb 2014 16:52:27 +0200
Cc:	xfs@xxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx
Delivered-to:	xfs@xxxxxxxxxxx
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Hi Christoph,

Thanks a lot! Applied your patches on top of 3.13.1 and they indeed
make a huge difference.


Append AIO

chunk size           w/o patches                               with patches
===================================================
4k               6.8834 Mb/sec 1762.15 IOps      31.542 Mb/sec 8074.75 IOps
8k               15.321 Mb/sec 1961.12 IOps      62.873 Mb/sec 8047.71 IOps
16k             28.257 Mb/sec 1808.46 IOps      139.35 Mb/sec 8918.45 IOps


On 4 February 2014 19:24, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> At least XFS can support appending AIO writes easily, and Sergey has
> demonstrated a use case for them.
>
> I've not done any performance testing myself, but ensured that xfstests
> already exercises the code path.

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[PATCH 0/3] support appending AIO writes, Christoph Hellwig [PATCH 2/3] xfs: always use unwritten extents for direct I/O writes, Christoph Hellwig [PATCH 3/3] xfs: allow appending aio writes, Christoph Hellwig [PATCH 1/3] direct-io: add flag to allow aio writes beyond i_size, Christoph Hellwig Re: [PATCH 0/3] support appending AIO writes, Dave Chinner Re: [PATCH 0/3] support appending AIO writes, Christoph Hellwig Re: [PATCH 0/3] support appending AIO writes, Dave Chinner Re: [PATCH 0/3] support appending AIO writes, Al Viro Re: [PATCH 0/3] support appending AIO writes, Sergey Meirovich <= Re: [PATCH 0/3] support appending AIO writes, Sergey Meirovich Re: [PATCH 0/3] support appending AIO writes, Dave Chinner Re: [PATCH 0/3] support appending AIO writes, Sergey Meirovich

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