Re: page_launder() on 2.4.9/10 issue

From: Alex Bligh - linux-kernel (linux-kernel@alex.org.uk)
Date: Thu Sep 06 2001 - 12:32:13 EST


--On Thursday, September 06, 2001 7:34 PM +0200 Daniel Phillips
<phillips@bonn-fries.net> wrote:

> On September 6, 2001 05:18 pm, Alex Bligh - linux-kernel wrote:
>> --On Thursday, September 06, 2001 5:10 PM +0200 Stephan von Krawczynski
>> <skraw@ithnet.com> wrote:
>>
>> > (or default = 1024) gives such a ridicolously bad
>> > performance
>>
>> I know. I am trying to ensure we have the problem definitively
>> identified, either from /proc/memareas, or by showing it
>> goes away if you change rsize/wsize. I am NOT proposing
>> it as a fix.
>
> Are rsize/wsize expressed in bytes? In which case you'd want them to be
> 4096 for this test.

Bytes per request. There is some header wastage, so 4096 is too high
as the packets will be slightly larger than a page. I suggested 1024
rather than 2048 as 1024 is the original standard & thus everything
supports it.

--
Alex Bligh
-
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