From: Martin Steigerwald <Martin@lichtvoll.de>
To: linux-btrfs@vger.kernel.org
Cc: David McBride <dwm@doc.ic.ac.uk>
Subject: Re: speeding up slow btrfs filesystem
Date: Sat, 17 Dec 2011 17:14:25 +0100 [thread overview]
Message-ID: <201112171714.25563.Martin@lichtvoll.de> (raw)
In-Reply-To: <1324125748.22624.14.camel@squire.doc.ic.ac.uk>
Am Samstag, 17. Dezember 2011 schrieb David McBride:
> On Sat, 2011-12-17 at 13:00 +0100, Martin Steigerwald wrote:
> > BTW on my ThinkPad T520 I do not perceive performance issues for
> > BTRFS as /. But then thats located on an Intel SSD 320 where seeks
> > should not matter much.
>=20
> Okay, that would be consistent with the slow behaviour observed by
> others on fsync()-heavy workloads. Presumably this produces much mor=
e
> seeky IO patterns than current common filesystems; I wonder if this i=
s
> a limitation of the current implementation or something that is an
> inherent properties of the data-structures being used?
All I can say is that the ThinkPad T520 doesn=C2=B4t seem the best mach=
ine for=20
testing the performance of software. I have seen nothing thats actually=
=20
been slow on that machine yet. Its not a machine for triggering=20
bottlenecks easily it seems to me.
--=20
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:[~2011-12-17 16:14 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-16 17:51 speeding up slow btrfs filesystem Martin Steigerwald
2011-12-16 17:54 ` Martin Steigerwald
2011-12-16 18:38 ` Goffredo Baroncelli
2011-12-16 19:53 ` Martin Steigerwald
2011-12-16 20:58 ` Martin Steigerwald
2011-12-17 7:03 ` Sergei Trofimovich
2011-12-17 11:09 ` Martin Steigerwald
2011-12-17 11:26 ` Hugo Mills
2011-12-17 11:38 ` Martin Steigerwald
2011-12-17 11:45 ` Hugo Mills
2011-12-17 11:57 ` Martin Steigerwald
2011-12-17 16:35 ` Martin Steigerwald
2011-12-17 17:27 ` Hugo Mills
2011-12-17 11:39 ` Goffredo Baroncelli
2011-12-18 18:41 ` Andrea Gelmini
2011-12-20 19:46 ` Goffredo Baroncelli
2011-12-17 11:11 ` Chris Samuel
2011-12-17 12:00 ` Martin Steigerwald
2011-12-17 12:42 ` David McBride
2011-12-17 16:14 ` Martin Steigerwald [this message]
2011-12-17 11:54 Martin Steigerwald
2011-12-17 12:02 ` Martin Steigerwald
2011-12-17 12:50 ` Goffredo Baroncelli
2011-12-17 16:10 ` Martin Steigerwald
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