From: Rik van Riel <riel@conectiva.com.br>
To: Georg Nikodym <georgn@somanetworks.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2.4.20-rmap15b
Date: Tue, 17 Dec 2002 19:50:04 -0200 (BRST) [thread overview]
Message-ID: <Pine.LNX.4.50L.0212171948400.26879-100000@imladris.surriel.com> (raw)
In-Reply-To: <200212161610.gBGGAuB7028719@localhost.localdomain>
On Mon, 16 Dec 2002, Georg Nikodym wrote:
> Incidentally, a colleague claimed to have seem this behaviour on a
> non-rmap 2.4.20.
> 1. Known behaviour?
> 2. Is there any data that I should be collecting that people are
> interested in?
> 3. Or should I just go back to 2.4.19-rmap14b (which did not trouble me
> in this way)?
The suspect is the disk elevator, which isn't scheduling requests
in a way to cause lower read latency, but is optimised more for
throughput. This results in some pauses.
I'll need to look into it.
regards,
Rik
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next prev parent reply other threads:[~2002-12-17 21:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-13 1:51 Rik van Riel
2002-12-16 16:10 ` Georg Nikodym
2002-12-17 21:50 ` Rik van Riel [this message]
2002-12-17 21:54 ` Georg Nikodym
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