From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from toomuch.toronto.redhat.com (IDENT:bcrl@toomuch.toronto.redhat.com [172.16.14.22]) by devserv.devel.redhat.com (8.11.0/8.11.0) with ESMTP id f844QYO21779 for ; Tue, 4 Sep 2001 00:26:34 -0400 Date: Tue, 4 Sep 2001 00:26:33 -0400 (EDT) From: Ben LaHaise Subject: pmap revisited (fwd) Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org List-ID: -- "The world would be a better place if Larry Wall had been born in Iceland, or any other country where the native language actually has syntax" -- Peter da Silva ---------- Forwarded message ---------- Date: Tue, 4 Sep 2001 03:13:34 +0000 (UTC) From: Samium Gromoff <_deepfire@mail.ru> To: linux-kernel@vger.kernel.org Cc: marcelo@brutus.conectiva.com.br, riel@surriel.com Subject: pmap revisited Ashes on my head guys... Gotta wrong results in my previous perftest... (slightly different environments), so these are to be sure that on low VM load there isnt any significant difference... Here are new and revisited. Actually i maked sure that the environments differs only in kernels... Bonus: two bugs! :) 1. Quintela`s (shmtest of memtest) and pmap{2,3} == 100% instant deadlock plain ac12 demonstrates ignorance. 2. Swapoff oops 100% - only in pmap3! (okay, swapoff of reiserfs to be strict, but i think that doesnt actually matters) swapoff oops will be in next mail. Revisited results: time find / -xdev - done 5 times pmap 3 real 1m5.175s real 1m4.699s real 1m3.579s ============================ pmap 2 real 1m5.039s real 1m4.779s real 1m4.506s ============================ plain real 1m4.820s real 1m4.433s real 1m4.285s * fillmem == (fillmem of memtest) * dont count on differences - they are quite flaky, one is only known: there are no much difference anyways... time fillmem - done 7 times, still giving strange results sometimes... pmap 3 real 1m2.709s real 1m2.417s real 1m1.371s real 1m1.241s real 1m0.235s (1m3.~, 1m4.5~) - add results ============================ pmap 2 real 1m5.294s real 1m5.169s real 1m4.431s real 1m3.878s real 1m3.523s (1m6.~, 1m0.~, 1m3.355) - add results ============================ plain real 1m1.570s real 1m1.063s real 1m1.007s real 1m0.201s real 0m59.677s - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ -- 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/