From: Patrick Caulfield <caulfield@sistina.com>
To: linux-lvm@sistina.com
Subject: Re: [linux-lvm] LVM and *bad* performance (no striping)
Date: Tue, 27 Feb 2001 08:35:28 +0000 [thread overview]
Message-ID: <20010227083528.A503@tykepenguin.com> (raw)
In-Reply-To: <20010226203933.B2504@66bassett.freeserve.co.uk>; from joe@66bassett.freeserve.co.uk on Mon, Feb 26, 2001 at 08:39:33PM +0000
On Mon, Feb 26, 2001 at 08:39:33PM +0000, Joe Thornber wrote:
> On Mon, Feb 26, 2001 at 04:44:34PM +0100, Urs Thuermann wrote:
> > I tried to use LVM today using Linux 2.4.2 and it mostly works like I
> > expected. But the performance is unacceptably bad:
>
> Every now and then someone posts to the list claiming LVM performance
> is really bad. We go off and try it and find the overhead is
> typically less than 1%.
>
> Normally people are trying to stripe to two partitions on the same
> device, but you aren't.
I've always seen bad performance doing dd on LVM volumes but very good
performance in "real world" performance or bonnie++ tests.
Stop worrying about it, how many times do you *need* to dd the start of
a disk at high speed eh? :-)
patrick
next prev parent reply other threads:[~2001-02-27 8:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-26 15:44 [linux-lvm] LVM and *bad* performance (no striping) Urs Thuermann
2001-02-26 20:39 ` Joe Thornber
2001-02-26 21:03 ` Jorg de Jong
2001-02-26 21:38 ` Rik van Riel
2001-02-27 8:35 ` Patrick Caulfield [this message]
2001-02-27 12:21 ` Urs Thuermann
2001-02-28 11:05 ` Heinz J. Mauelshagen
2001-04-10 19:30 ` Urs Thuermann
2001-04-10 21:37 ` Andreas Dilger
2001-04-11 11:23 ` Urs Thuermann
2001-04-11 19:49 ` Andreas Dilger
2001-04-11 22:00 ` Terje Kvernes
2001-05-15 11:46 ` Urs Thuermann
2001-05-15 12:13 ` Patrick Caulfield
2001-05-26 11:17 ` Urs Thuermann
2001-05-27 7:47 ` Andreas Dilger
2001-05-27 9:47 ` Urs Thuermann
2001-05-27 17:01 ` [linux-lvm] LVM and *bad* performance (counterexample) idsfa
2001-05-15 17:08 ` [linux-lvm] LVM and *bad* performance (no striping) Andreas Dilger
2001-05-26 11:23 ` Urs Thuermann
2001-02-26 21:41 ` Rik van Riel
2001-02-27 10:33 ` Urs Thuermann
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