From: <pcg@goof.com ( Marc) (A.) (Lehmann )>
To: Daryll Strauss <daryll@valinux.com>
Cc: Wilfried Weissmann <Wilfried.Weissmann@gmx.at>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: software raid does not do parallel reads under 2.4?
Date: Fri, 24 Aug 2001 22:23:50 +0200 [thread overview]
Message-ID: <20010824222350.C12903@fuji.laendle> (raw)
In-Reply-To: <20010823234218.B12873@cerebro.laendle> <15238.11161.492557.264988@notabene.cse.unsw.edu.au> <3B868874.B89B04DE@gmx.at> <20010824101439.C1717@newbie>
In-Reply-To: <20010824101439.C1717@newbie>
On Fri, Aug 24, 2001 at 10:14:39AM -0700, Daryll Strauss <daryll@valinux.com> wrote:
> > There were a lot of ide reports some time ago. Maybe they where problems
> > with concurrent I/O operations...?
>
> I'm seeing similar behavior with SCSI. I've got two SCSI channels. If I
> run two dd's each talking to disks on different channels, I get 2x disk
similar, but quite different: the difefrence is that i get full speed when
accessing drives as /dev/hdx, but slow speed when doping the same opertaion
using md.
--
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----==-- _ |
---==---(_)__ __ ____ __ Marc Lehmann +--
--==---/ / _ \/ // /\ \/ / pcg@goof.com |e|
-=====/_/_//_/\_,_/ /_/\_\ XX11-RIPE --+
The choice of a GNU generation |
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next prev parent reply other threads:[~2001-08-24 20:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-23 21:42 software raid does not do parallel reads under 2.4? Lehmann
2001-08-24 10:25 ` Neil Brown
2001-08-24 17:01 ` Wilfried Weissmann
2001-08-24 17:14 ` Daryll Strauss
2001-08-24 20:23 ` Lehmann [this message]
2001-08-24 20:22 ` Lehmann
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