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Subject: Re: [BENCHMARK] scheduler tunables with contest - starvation_limit
From: Robert Love <rml@tech9.net>
To: Con Kolivas <conman@kolivas.net>
Cc: David Lang <david.lang@digitalinsight.com>,
       linux kernel mailing list <linux-kernel@vger.kernel.org>
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On Sun, 2002-12-22 at 20:40, Con Kolivas wrote:

> The current osdl hardware uses ext3 in the default journalling mode. Trying 
> different filesystems is something I have had planned for a while. When I get 
> the hardware sorted out as I need it to do this I will post some results 
> where comparisons can be made.

One thing I have found in doing low-latency research is the impact of
ext3 over ext2.  There is a periodic blip of high latency with ext3 not
seen in ext2.  Presumably due to the journal writeback of ext3.

It was not huge but a measurable increase.  This was on 2.4, so I am
curious how improved it is on 2.5.

	Robert Love

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