From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Ostrowski MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14650.50266.280696.578972@styx.uwaterloo.ca> Date: Sun, 4 Jun 2000 17:04:26 -0400 (EDT) Subject: Good I/O Performance with 2.4.0-test1-ac7 + axboe Sender: owner-linux-mm@kvack.org Return-Path: To: Jens Axboe , linux-mm@kvack.org List-ID: Here are some new tests I've re-run with my code using Jens Axboe's elevator fixes. Looks pretty good. I'll try running SMP tests today or tomorrow. Note the order of magnitude improvement from the test results I posted last week. Small downside --- system is much less responsive to user interaction during heavy I/O. Michal Ostrowski mostrows@styx.uwaterloo.ca Threads Blocks Time per read 1 1 7.25 1 2 7.03 1 4 8.25 1 8 14.46 1 16 19.72 1 32 22.98 4 1 9.49 4 2 9.27 4 4 8.00 4 8 9.16 4 16 16.17 4 32 22.14 8 1 6.95 8 2 6.31 8 4 6.88 8 8 8.92 8 16 15.76 8 32 22.14 16 1 5.62 16 2 5.91 16 4 6.90 16 8 8.09 16 16 14.92 16 32 22.69 32 1 5.05 32 2 5.14 32 4 5.81 32 8 7.55 32 16 15.22 32 32 20.13 -- 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/