From: Timothy Miller <miller@techsource.com>
To: Ken Moffat <ken@kenmoffat.uklinux.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: IDE throughput in 2.6 - it's good!
Date: Tue, 27 Apr 2004 11:38:33 -0400 [thread overview]
Message-ID: <408E7E79.9080405@techsource.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0404232237140.19797@ppg_penguin>
Ken Moffat wrote:
>
> So, despite the numbers shown by hdparm looking worse, when only one
> user is doing anything the performance is actually improved. I've no
> idea which changes have achieved this, but thanks to whoever were
> involved.
I've done tests using dd to and from the raw block device under 2.4 and
2.6. Memory size (kernel boot param mem=) doesn't seem to affect
performance, so I assume that means that dd to and from the raw block
device is unbuffered. When I compare read and write speeds between 2.4
and 2.6, 2.6 is definately slower. The last 2.6 kernel I tried this
with is 2.6.5.
next prev parent reply other threads:[~2004-04-27 15:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-23 21:56 IDE throughput in 2.6 - it's good! Ken Moffat
2004-04-27 15:38 ` Timothy Miller [this message]
2004-04-27 19:17 ` Ken Moffat
2004-04-27 20:43 ` Timothy Miller
-- strict thread matches above, loose matches on Subject: below --
2004-04-24 15:29 FabF
2004-04-24 23:58 ` IDE " Nick Piggin
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