From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 17 Jan 2001 14:17:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 17 Jan 2001 14:17:40 -0500 Received: from inje.iskon.hr ([213.191.128.16]:56334 "EHLO inje.iskon.hr") by vger.kernel.org with ESMTP id ; Wed, 17 Jan 2001 14:17:32 -0500 To: Rik van Riel Cc: , Subject: Re: Subtle MM bug In-Reply-To: Reply-To: zlatko@iskon.hr X-Face: s71Vs\G4I3mB$X2=P4h[aszUL\%"`1!YRYl[JGlC57kU-`kxADX}T/Bq)Q9.$fGh7lFNb.s i&L3xVb:q_Pr}>Eo(@kU,c:3:64cR]m@27>1tGl1):#(bs*Ip0c}N{:JGcgOXd9H'Nwm:}jLr\FZtZ pri/C@\,4lW<|jrq^<):Nk%Hp@G&F"r+n1@BoH From: Zlatko Calusic Date: 17 Jan 2001 19:53:31 +0100 In-Reply-To: Rik van Riel's message of "Wed, 17 Jan 2001 15:48:39 +1100 (EST)" Message-ID: <87wvburowk.fsf@atlas.iskon.hr> User-Agent: Gnus/5.0807 (Gnus v5.8.7) XEmacs/21.2 (Peisino,Ak(B) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Rik van Riel writes: > > Second test: kernel compile make -j32 (empirically this puts the > > VM under load, but not excessively!) > > > > 2.2.17 -> make -j32 392.49s user 47.87s system 168% cpu 4:21.13 total > > 2.4.0 -> make -j32 389.59s user 31.29s system 182% cpu 3:50.24 total > > > > Now, is this great news or what, 2.4.0 is definitely faster. > > One problem is that these tasks may be waiting on kswapd when > kswapd might not get scheduled in on time. On the one hand this > will mean lower load and less thrashing, on the other hand it > means more IO wait. > Hm, if all tasks are waiting for memory, what is stopping kswapd to run? :) -- Zlatko - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/