From: Nate Diller <nate.diller@gmail.com>
To: Jens Axboe <axboe@suse.de>
Cc: Chuck Ebbert <76306.1226@compuserve.com>,
Andrew Morton <akpm@osdl.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Mingming Cao <cmm@us.ibm.com>
Subject: Re: Fall back io scheduler for 2.6.15?
Date: Thu, 19 Jan 2006 11:38:12 -0800 [thread overview]
Message-ID: <5c49b0ed0601191138g17411d3ene89380a13a7faee9@mail.gmail.com> (raw)
In-Reply-To: <20060116084336.GO3945@suse.de>
On 1/16/06, Jens Axboe <axboe@suse.de> wrote:
> On Sat, Jan 14 2006, Chuck Ebbert wrote:
> > In-Reply-To: <20060113174914.7907bf2c.akpm@osdl.org>
> >
> > On Fri, 13 Jan 2006, Andrew Morton wrote:
> >
> > > OK. And I assume that AS wasn't compiled, so that's why it fell back?
> >
> > As of 2.6.15 you need to use "anticipatory" instead of "as".
> >
> > Maybe this patch would help?
> >
> > Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
> >
> > --- 2.6.15a.orig/block/elevator.c
> > +++ 2.6.15a/block/elevator.c
> > @@ -150,6 +150,13 @@ static void elevator_setup_default(void)
> > if (!chosen_elevator[0])
> > strcpy(chosen_elevator, CONFIG_DEFAULT_IOSCHED);
> >
> > + /*
> > + * Be backwards-compatible with previous kernels, so users
> > + * won't get the wrong elevator.
> > + */
> > + if (!strcmp(chosen_elevator, "as"))
> > + strcpy(chosen_elevator, "anticipatory");
> > +
> > /*
> > * If the given scheduler is not available, fall back to no-op.
> > */
>
> We probably should apply this, since it used to be 'as'.
i agree
NATE
next prev parent reply other threads:[~2006-01-19 19:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-14 16:10 Fall back io scheduler for 2.6.15? Chuck Ebbert
2006-01-16 8:43 ` Jens Axboe
2006-01-19 19:38 ` Nate Diller [this message]
2006-01-21 6:14 ` Tejun Heo
2006-01-21 11:44 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2005-04-05 3:51 ext3 allocate-with-reservation latencies Lee Revell
2005-04-07 13:08 ` Stephen C. Tweedie
2005-04-07 23:37 ` Mingming Cao
2005-04-08 14:40 ` Stephen C. Tweedie
2005-04-08 18:10 ` Mingming Cao
2005-04-11 11:48 ` Stephen C. Tweedie
2005-04-11 18:38 ` Mingming Cao
2005-04-11 19:57 ` Stephen C. Tweedie
2005-04-12 6:41 ` Mingming Cao
2005-04-12 11:18 ` Stephen C. Tweedie
2005-04-12 23:27 ` Mingming Cao
2005-04-13 10:29 ` Stephen C. Tweedie
2005-04-22 22:10 ` [RFC][PATCH] Reduce ext3 allocate-with-reservation lock latencies Mingming Cao
2005-04-28 3:45 ` Lee Revell
2005-04-28 19:14 ` [RFC] Adding multiple block allocation to current ext3 Mingming Cao
2006-01-10 23:26 ` [PATCH 0/5] " Mingming Cao
2006-01-11 5:25 ` Andrew Morton
2006-01-11 19:17 ` Mingming Cao
2006-01-11 19:43 ` Andrew Morton
2006-01-14 1:12 ` Fall back io scheduler for 2.6.15? Mingming Cao
2006-01-14 1:49 ` Andrew Morton
2006-01-14 5:22 ` Dave Jones
2006-01-16 8:43 ` Jens Axboe
2006-01-19 19:37 ` Nate Diller
2006-01-20 8:10 ` Jens Axboe
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