From: Rene Herman <rene.herman@gmail.com>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: Andrew Morton <akpm@osdl.org>, Tejun Heo <htejun@gmail.com>,
Jens Axboe <axboe@suse.de>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>
Subject: Re: 2.6.20-rc2+: CFQ halving disk throughput.
Date: Tue, 02 Jan 2007 11:24:37 +0100 [thread overview]
Message-ID: <459A32E5.70506@gmail.com> (raw)
In-Reply-To: <20070102084447.GS2483@kernel.dk>
Jens Axboe wrote:
> On Mon, Jan 01 2007, Andrew Morton wrote:
>> The patch would appear to need this fix:
>>
>> --- a/block/cfq-iosched.c~a
>> +++ a/block/cfq-iosched.c
>> @@ -592,7 +592,7 @@ static int cfq_allow_merge(request_queue
>> if (cfqq == RQ_CFQQ(rq))
>> return 1;
>>
>> - return 1;
>> + return 0;
>> }
>>
>> static inline void
>> _
>>
>> But that might not fix things...
>
> Yeah it is, but I don't think it'll fix it (if anything, it'll be more
> conservative).
(to possibly save others from trying -- no, doesn't fix any)
Rene.
next prev parent reply other threads:[~2007-01-02 10:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-20 13:37 PATA -- pata_amd on 2.6.19 fails to IDENTIFY my DVD-ROM Rene Herman
2006-12-27 7:19 ` Tejun Heo
2006-12-27 17:50 ` Rene Herman
2006-12-28 2:24 ` Tejun Heo
2007-01-01 22:46 ` 2.6.20-rc2+: CFQ halving disk throughput Rene Herman
2007-01-01 22:56 ` Rene Herman
2007-01-01 23:30 ` Linus Torvalds
2007-01-01 23:28 ` Mark Lord
2007-01-02 8:34 ` Jens Axboe
2007-01-02 15:01 ` Mark Lord
2007-01-02 16:53 ` Tejun Heo
2007-01-02 17:35 ` Mark Lord
2007-01-02 17:53 ` Tejun Heo
2007-01-02 18:10 ` Mark Lord
2007-01-02 17:09 ` Jan Engelhardt
2007-01-02 5:36 ` Andrew Morton
2007-01-02 8:44 ` Jens Axboe
2007-01-02 10:24 ` Rene Herman [this message]
2007-01-02 11:57 ` Jens Axboe
2007-01-02 12:10 ` Jens Axboe
2007-01-02 15:12 ` Mark Lord
2007-01-02 15:14 ` Jens Axboe
2007-01-02 15:40 ` Mark Lord
2007-01-02 15:45 ` Jens Axboe
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