Subject: Re: Bad response...
To: None <email@example.com>
From: Michael van Elst <firstname.lastname@example.org>
Date: 08/31/2004 05:42:41
email@example.com (Thor Lancelot Simon) writes:
>On Mon, Aug 30, 2004 at 10:49:53PM +0000, Michael van Elst wrote:
>> Wouldn't a simple constant limit to the number of dirty pages
>> in the filecache be sufficient ? This will put a limit on the
>> time needed to reuse those pages.
>No, it won't -- because you can't know how many seeks will be required to
>actually write out the data.
That's correct. Depending on your hardware the number of seeks
can make a huge difference.
But if you don't know it exactly then try an estimation :)
After all, we don't know exact good values for the other vm knobs and
have to live with mere constants.
Michael van Elst
"A potential Snark may lurk in every tree."