From: Martin Steigerwald <Martin@lichtvoll.de>
To: linux-xfs@oss.sgi.com
Cc: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: 12x performance drop on md/linux+sw raid1 due to barriers [xfs]
Date: Sun, 14 Dec 2008 19:35:36 +0100 [thread overview]
Message-ID: <200812141935.36744.Martin@lichtvoll.de> (raw)
In-Reply-To: <18757.4606.966139.10342@tree.ty.sabi.co.uk>
Am Sonntag 14 Dezember 2008 schrieb Peter Grandi:
> First of all, why are you people sending TWO copies to the XFS
> mailing list? (to both linux-xfs@oss.sgi.com and xfs@oss.sgi.com).
[...]
> > So its really more of an expectation that wc+barriers on,
> > performs better than wc+barriers off :)
>
> This is of course a misstatement: perhaps you intended to write
> that ''wc on+barriers on'' would perform better than ''wc off +
> barriers off'.
I think Redeeman said exactly that ;-). Either both on or both off.
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
WARNING: multiple messages have this Message-ID (diff)
From: Martin Steigerwald <Martin@lichtvoll.de>
To: linux-xfs@oss.sgi.com
Cc: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: 12x performance drop on md/linux+sw raid1 due to barriers [xfs]
Date: Sun, 14 Dec 2008 19:35:36 +0100 [thread overview]
Message-ID: <200812141935.36744.Martin@lichtvoll.de> (raw)
In-Reply-To: <18757.4606.966139.10342@tree.ty.sabi.co.uk>
Am Sonntag 14 Dezember 2008 schrieb Peter Grandi:
> First of all, why are you people sending TWO copies to the XFS
> mailing list? (to both linux-xfs@oss.sgi.com and xfs@oss.sgi.com).
[...]
> > So its really more of an expectation that wc+barriers on,
> > performs better than wc+barriers off :)
>
> This is of course a misstatement: perhaps you intended to write
> that ''wc on+barriers on'' would perform better than ''wc off +
> barriers off'.
I think Redeeman said exactly that ;-). Either both on or both off.
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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next prev parent reply other threads:[~2008-12-14 18:35 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-06 14:28 12x performance drop on md/linux+sw raid1 due to barriers [xfs] Justin Piszcz
2008-12-06 14:28 ` Justin Piszcz
2008-12-06 15:36 ` Eric Sandeen
2008-12-06 20:35 ` Redeeman
2008-12-06 20:35 ` Redeeman
2008-12-13 12:54 ` Justin Piszcz
2008-12-13 12:54 ` Justin Piszcz
2008-12-13 17:26 ` Martin Steigerwald
2008-12-13 17:26 ` Martin Steigerwald
2008-12-13 17:40 ` Eric Sandeen
2008-12-13 17:40 ` Eric Sandeen
2008-12-14 3:31 ` Redeeman
2008-12-14 3:31 ` Redeeman
2008-12-14 14:02 ` Peter Grandi
2008-12-14 14:02 ` Peter Grandi
2008-12-14 18:12 ` Martin Steigerwald
2008-12-14 18:12 ` Martin Steigerwald
2008-12-14 22:02 ` Peter Grandi
2008-12-14 22:02 ` Peter Grandi
2008-12-15 18:48 ` Martin Steigerwald
2008-12-15 22:50 ` Peter Grandi
2009-02-18 22:14 ` Leon Woestenberg
2009-02-18 22:24 ` Eric Sandeen
2009-02-18 23:09 ` Ralf Liebenow
2009-02-18 23:19 ` Eric Sandeen
2009-02-20 19:19 ` Peter Grandi
2008-12-15 22:38 ` Dave Chinner
2008-12-15 22:38 ` Dave Chinner
2008-12-16 9:39 ` Martin Steigerwald
2008-12-16 9:39 ` Martin Steigerwald
2008-12-16 20:57 ` Peter Grandi
2008-12-16 23:14 ` Dave Chinner
2008-12-16 23:14 ` Dave Chinner
2008-12-17 21:40 ` Bill Davidsen
2008-12-17 21:40 ` Bill Davidsen
2008-12-18 8:20 ` Leon Woestenberg
2008-12-18 23:33 ` Bill Davidsen
2008-12-21 19:16 ` Peter Grandi
2008-12-22 13:19 ` Leon Woestenberg
2008-12-22 13:19 ` Leon Woestenberg
2008-12-18 22:26 ` Dave Chinner
2008-12-18 22:26 ` Dave Chinner
2008-12-20 14:06 ` Peter Grandi
2008-12-14 18:35 ` Martin Steigerwald [this message]
2008-12-14 18:35 ` Martin Steigerwald
2008-12-14 17:49 ` Martin Steigerwald
2008-12-14 17:49 ` Martin Steigerwald
2008-12-14 23:36 ` Dave Chinner
2008-12-14 23:36 ` Dave Chinner
2008-12-14 23:55 ` Eric Sandeen
2008-12-13 18:01 ` David Lethe
2008-12-13 18:01 ` David Lethe
2008-12-06 18:42 ` Peter Grandi
2008-12-11 0:20 ` Bill Davidsen
2008-12-11 0:20 ` Bill Davidsen
2008-12-11 9:18 ` Justin Piszcz
2008-12-11 9:18 ` Justin Piszcz
2008-12-11 9:24 ` Justin Piszcz
2008-12-11 9:24 ` Justin Piszcz
-- strict thread matches above, loose matches on Subject: below --
2008-12-14 18:33 Martin Steigerwald
2008-12-14 18:33 ` Martin Steigerwald
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