Subject: Re: Bad response...
To: None <current-users@netbsd.org>
From: Michael van Elst <mlelstv@serpens.de>
List: current-users
Date: 08/31/2004 05:42:41
tls@rek.tjls.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
Internet: mlelstv@serpens.de
                                "A potential Snark may lurk in every tree."