From: Jens Axboe <axboe@kernel.dk>
To: Andi Kleen <andi@firstfloor.org>
Cc: Chris Mason <chris.mason@oracle.com>,
Freek Dijkstra <Freek.Dijkstra@sara.nl>,
linux-btrfs@vger.kernel.org
Subject: Re: Poor read performance on high-end server
Date: Sun, 08 Aug 2010 07:04:38 -0400 [thread overview]
Message-ID: <4C5E8F46.5010706@kernel.dk> (raw)
In-Reply-To: <87r5i98tdf.fsf@basil.nowhere.org>
On 08/08/2010 03:18 AM, Andi Kleen wrote:
> Jens Axboe <axboe@kernel.dk> writes:
>>
>> Also, I didn't see Chris mention this, but if you have a newer intel box
>> you can use hw accellerated crc32c instead. For some reason my test box
>> always loads crc32c and not crc32c-intel, so I need to do that manually.
>
> I have a patch for that, will post it later: autoloading of modules
> based on x86 cpuinfo.
Great, it is pretty annoying to have to do it manually. Sometimes
you forget. And it's not possible to de-select CRC32C and have
the intel variant loaded.
--
Jens Axboe
next prev parent reply other threads:[~2010-08-08 11:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-05 14:05 Poor read performance on high-end server Freek Dijkstra
2010-08-05 14:51 ` Chris Mason
2010-08-05 21:21 ` Freek Dijkstra
2010-08-05 22:13 ` Daniel J Blueman
2010-08-06 11:41 ` Chris Mason
2010-08-06 11:55 ` Jens Axboe
2010-08-06 11:59 ` Chris Mason
2010-08-20 4:53 ` Sander
2010-08-20 14:37 ` Chris Mason
2010-08-08 7:18 ` Andi Kleen
2010-08-08 11:04 ` Jens Axboe [this message]
2010-08-09 14:45 ` Freek Dijkstra
2010-08-10 0:55 ` Chris Mason
2010-08-05 14:54 ` Daniel J Blueman
2010-08-05 16:21 ` Mathieu Chouquet-Stringer
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