From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3D948EA6.A6EFC26B@austin.ibm.com> Date: Fri, 27 Sep 2002 12:00:22 -0500 From: Bill Hartner MIME-Version: 1.0 Subject: Re: VolanoMark Benchmark results for 2.5.26, 2.5.26 + rmap, 2.5.35,and 2.5.35 + mm1 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel Cc: Andrew Morton , linux-mm@kvack.org, lse-tech@lists.sourceforge.net, mbligh@aracnet.com List-ID: Rik van Riel wrote: > > > > > 2.5.26 vs 2.5.26 + rmap patch > > > ----------------------------- > > > It appears as though the page stealing decisions made when using the > > > 2.5.26 rmap patch may not be as good as the baseline for this workload. > > > There was more swap activity and idle time. > > > > Do you have similar results for 2.4 and 2.4-rmap? > > If Bill is going to test this, I'd appreciate it if he could use > rmap14a (or newer, if I've released it by the time he gets around > to testing). > More VolanoMark results using an 8-way 700 Mhz under memory pressure for 2.4.19 and rmap14b. Details of SUT same as : http://marc.theaimsgroup.com/?l=linux-mm&m=103229747000714&w=2 NOTE : the swap device is on ServeRAID which is probably bouncing for the HIGHMEM pages in most if not all of the tests so results will likely improve when bouncing is eliminated. 2419 = 2.4.19 + o(1) scheduler 2419rmap = 2.4.19 + rmap14b + o(1) scheduler %sys/%user = ratio of %system CPU utilization to %user CPU utilization. ======================================== The results for the 3 GB mem test were : ======================================== kernel msg/s %CPU %sys/%user Total swpin Total swpout Total swapio ----------- ----- ---- ---------- ------------ ------------ ------------ 2.4.19 ***** system hard hangs - requires reset. ***** 2.4.19rmap 37767 76.9 1.46 2,274,380 KB 3,800,336 KB 6,074,716 KB =============================== old data below=============================== 2.5.26 51824 96.3 1.42 1,987,024 KB 2,148,100 KB 4,135,124 KB 2.5.26rmap 46053 90.8 1.55 3,139,324 KB 3,887,368 KB 7,026,692 KB 2.5.35 44693 86.1 1.45 1,982,236 KB 5,393,152 KB 7,375,388 KB 2.5.35mm1 39679 99.6 1.50 *2,720,600 KB *6,154,512 KB *8,875,112 KB * used pgin/pgout instead of swapin/swapout since /proc/stat changed. 2.4.19 + o(1) hangs the system - requires reset. 2.4.19 + rmap13 + o(1) performance is degraded. The baseline 2.4.19 hangs after a couple of attempts so no direct comparision. There are also peaks of idle time during high swap activity. ======================================== The results for the 4 GB mem test were : ======================================== kernel msg/s %CPU %sys/%user Total swpin Total swpout Total swapio ----------- ----- ---- ---------- ------------ ------------ ------------ 2.4.19 55386 99.8 1.40 0 0 0 2.4.19rmap 52330 99.5 1.43 0 2,363,388 KB 2,363,388 KB =============================== old data below=============================== 2.5.26 55446 99.4 1.40 0 0 0 2.5.35 52845 99.9 1.38 0 0 0 2.5.35mm1 52755 99.9 1.42 0 0 0 2.4.19 + o(1) using 4GB memory performs as well as 2.5.26. 2.4.19 + rmap14b + o(1) performance is down 5.5 % (52330/55386). There was swap io even though we had 500MB free mem. Bill -- 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-mm.org/