All of lore.kernel.org
 help / color / mirror / Atom feed
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.

  reply	other threads:[~2007-01-02 10:26 UTC|newest]

Thread overview: 25+ 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 21:50                     ` ATA_12 support for libata/ATAPI devices Mark Lord
2007-01-02 17:09               ` 2.6.20-rc2+: CFQ halving disk throughput 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=459A32E5.70506@gmail.com \
    --to=rene.herman@gmail.com \
    --cc=akpm@osdl.org \
    --cc=alan@lxorguk.ukuu.org.uk \
    --cc=axboe@suse.de \
    --cc=htejun@gmail.com \
    --cc=jens.axboe@oracle.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=torvalds@osdl.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.