From: Nick Piggin <piggin@cyberone.com.au>
To: Andrew Morton <akpm@digeo.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: 2.5.61-mm1
Date: Sat, 15 Feb 2003 18:25:38 +1100 [thread overview]
Message-ID: <3E4DEB72.4010405@cyberone.com.au> (raw)
In-Reply-To: 20030214231356.59e2ef51.akpm@digeo.com
Andrew Morton wrote:
>http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.61/2.5.61-mm1/
>
>. Jens has fixed the request queue aliasing problem and we are no longer
> able to break the IO scheduler. This was preventing the OSDL team from
> running dbt2 against recent kernels, so hopefully that is all fixed up now.
>
>. The anticipatory scheduler is performing well. I've included that now.
>
And for those interested, if you find unusual IO performance,
please try disabling AS and reporting results. Thanks.
echo 0 > /sys/block/?/iosched/antic_expire
This value defaults to 10 (ms). More than around 20 might do
funny though not harmful stuff due to a fragile bitshift.
Nick
WARNING: multiple messages have this Message-ID (diff)
From: Nick Piggin <piggin@cyberone.com.au>
To: Andrew Morton <akpm@digeo.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: 2.5.61-mm1
Date: Sat, 15 Feb 2003 18:25:38 +1100 [thread overview]
Message-ID: <3E4DEB72.4010405@cyberone.com.au> (raw)
In-Reply-To: 20030214231356.59e2ef51.akpm@digeo.com
Andrew Morton wrote:
>http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.61/2.5.61-mm1/
>
>. Jens has fixed the request queue aliasing problem and we are no longer
> able to break the IO scheduler. This was preventing the OSDL team from
> running dbt2 against recent kernels, so hopefully that is all fixed up now.
>
>. The anticipatory scheduler is performing well. I've included that now.
>
And for those interested, if you find unusual IO performance,
please try disabling AS and reporting results. Thanks.
echo 0 > /sys/block/?/iosched/antic_expire
This value defaults to 10 (ms). More than around 20 might do
funny though not harmful stuff due to a fragile bitshift.
Nick
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next prev parent reply other threads:[~2003-02-15 7:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-15 7:13 2.5.61-mm1 Andrew Morton
2003-02-15 7:13 ` 2.5.61-mm1 Andrew Morton
2003-02-15 7:25 ` Nick Piggin [this message]
2003-02-15 7:25 ` 2.5.61-mm1 Nick Piggin
2003-02-15 11:27 ` 2.5.61-mm1 Con Kolivas
2003-02-15 23:41 ` 2.5.61-mm1 Andrew Morton
2003-02-16 1:03 ` 2.5.61-mm1 Con Kolivas
2003-02-15 14:29 ` 2.5.61-mm1 Ed Tomlinson
2003-02-15 14:29 ` 2.5.61-mm1 Ed Tomlinson
2003-02-16 0:12 ` 2.5.61-mm1 James H. Cloos Jr.
2003-02-16 0:29 ` 2.5.61-mm1 Andrew Morton
2003-02-17 11:38 ` 2.5.61-mm1 Maneesh Soni
2003-02-17 11:29 ` 2.5.61-mm1 Andrew Morton
2003-02-17 22:44 ` 2.5.61-mm1 Cliff White
2003-02-17 22:44 ` 2.5.61-mm1 Cliff White
-- strict thread matches above, loose matches on Subject: below --
2003-02-17 22:50 2.5.61-mm1 Cliff White
2003-02-17 23:13 ` 2.5.61-mm1 Matthew Wilcox
2003-02-17 23:52 ` 2.5.61-mm1 Cliff White
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