From: "Dr. Werner Fink" <werner@suse.de>
To: H.H.vanRiel@fys.ruu.nl
Cc: sct@dcs.ed.ac.uk, torvalds@transmeta.com, blah@kvack.org,
linux-mm@kvack.org
Subject: Re: [uPATCH] small kswapd improvement ???
Date: Wed, 4 Mar 1998 15:00:24 +0100 [thread overview]
Message-ID: <199803041400.PAA06227@boole.fs100.suse.de> (raw)
In-Reply-To: <Pine.LNX.3.91.980304005820.5443F-100000@mirkwood.dummy.home> (message from Rik van Riel on Wed, 4 Mar 1998 00:59:33 +0100 (MET))
> > > vmscan.c. Back then a simple bug was encountered and 'fixed'
> > > by always starting the memory scan at adress 0, which gives
> > > a highly unfair and inefficient aging process.
> >
> > Ouch --- I wonder how much this is hurting 2.0.33. I think I'll have
> > to try that, and perhaps look at this for 2.0.34/LMP...
>
> It doesn't hurt _that_ much... Otherwise we wouldn't
> have left it in the swapper code for three years :-)
Maybe that's the reason why the bigger initial age for swapped in pages gives
an improvement in 2.0.33 ... it's a ``better protection'' for often needed
pages.
Werner
next prev parent reply other threads:[~1998-03-04 14:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-03-03 17:05 Rik van Riel
1998-03-03 19:09 ` Rik van Riel
1998-03-03 23:54 ` Stephen C. Tweedie
1998-03-03 23:59 ` Rik van Riel
1998-03-04 1:17 ` Benjamin C.R. LaHaise
1998-03-04 11:54 ` Rik van Riel
1998-03-04 21:11 ` Stephen C. Tweedie
1998-03-04 23:27 ` Rik van Riel
1998-03-04 14:00 ` Dr. Werner Fink [this message]
1998-03-04 15:33 ` Rik van Riel
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