From: Urs Thuermann <urs@isnogud.escape.de>
To: linux-lvm@sistina.com
Subject: Re: [linux-lvm] LVM and *bad* performance (no striping)
Date: 27 Feb 2001 11:33:23 +0100 [thread overview]
Message-ID: <m2ae782z64.fsf@isnogud.escape.de> (raw)
In-Reply-To: <Pine.LNX.4.33.0102261839460.5502-100000@duckman.distro.conectiva>; from Rik van Riel on Mon, 26 Feb 2001 18:41:37 -0300 (BRST)
Rik van Riel <riel@conectiva.com.br> writes:
> Maybe dd is reading in 512 byte blocks on /dev/sda5 and
> 4096 bytes on /dev/vg0/test ?
I've checked it. The man page says if no bs is given, dd defaults to
512 bytes on any device. I've also checked it with dd|wc.
The performance numbers I've observed seem to dependant on caching.
urs
prev parent reply other threads:[~2001-02-27 10:33 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
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 [this message]
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