From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 4 Mar 1998 15:00:24 +0100 Message-Id: <199803041400.PAA06227@boole.fs100.suse.de> From: "Dr. Werner Fink" In-reply-to: (message from Rik van Riel on Wed, 4 Mar 1998 00:59:33 +0100 (MET)) Subject: Re: [uPATCH] small kswapd improvement ??? Sender: owner-linux-mm@kvack.org To: H.H.vanRiel@fys.ruu.nl Cc: sct@dcs.ed.ac.uk, torvalds@transmeta.com, blah@kvack.org, linux-mm@kvack.org List-ID: > > > 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