From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH] Recent VM fiasco - fixed References: From: "James H. Cloos Jr." In-Reply-To: "James H. Cloos Jr."'s message of "09 May 2000 23:05:01 -0500" Date: 10 May 2000 02:29:09 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Linus Torvalds Cc: linux-mm@kvack.org, linux-kernel@vger.rutgers.edu List-ID: Ok. Tried w/ Manfred patch (ie the 2nd half). kswapd still uses a lot of cpu doing recursuve cp(1)s, but it is less than in virgin pre7-8. I got about 10s of cpu for cp and 40s for kswapd doing a cp -a of the 7-8 tree (after compiling) on the ide drive (w/ 4k ext2 blocks). On the 1k ext2 block scsi partition, it was 1m50s for kswapd and 20s for cp to cp three such trees. kswapd %cpu never exceeded 65% on the latter and 50% on the former; substantially better than in virgin 7-8, but not as good as earlier kernels (though I don't have any numbers to back that up). I did this test in single user mode w/ only top running (on another vc). Hope the datapoint helps! -JimC -- James H. Cloos, Jr. 1024D/ED7DAEA6 E9E9 F828 61A4 6EA9 0F2B 63E7 997A 9F17 ED7D AEA6 Save Trees: Get E-Gold! -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/