Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269357AbUI3RMi (ORCPT ); Thu, 30 Sep 2004 13:12:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269359AbUI3RMh (ORCPT ); Thu, 30 Sep 2004 13:12:37 -0400 Received: from zeus.kernel.org ([204.152.189.113]:63736 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id S269357AbUI3RM2 (ORCPT ); Thu, 30 Sep 2004 13:12:28 -0400 Message-ID: <415C3F44.2080206@sgi.com> Date: Thu, 30 Sep 2004 12:15:48 -0500 From: Ray Bryant User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Nick Piggin CC: Nick Piggin , William Lee Irwin III , Marcelo Tosatti , Con Kolivas , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, riel@redhat.com Subject: Re: swapping and the value of /proc/sys/vm/swappiness References: <20040906162740.54a5d6c9.akpm@osdl.org> <20040907000304.GA8083@logos.cnet> <20040907212051.GC3492@logos.cnet> <413F1518.7050608@sgi.com> <20040908165412.GB4284@logos.cnet> <413F5EE7.6050705@sgi.com> <20040908193036.GH4284@logos.cnet> <413FC8AC.7030707@sgi.com> <20040909030916.GR3106@holomorphy.com> <4158C45B.8090409@sgi.com> <4158DC27.9010603@yahoo.com.au> <415A0378.9030007@cyberone.com.au> In-Reply-To: <415A0378.9030007@cyberone.com.au> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3333 Lines: 82 Nick Piggin wrote: > > > Nick Piggin wrote: > >> >> Thanks Ray. From looking over your old results, it appears that >> -kswapdfix >> probably has the nicest swappiness ramp, which is probably to be >> expected, >> as the problem that is being fixed did exist in all other kernels you >> tested, >> but the later ones just had other aggrivating changes. >> >> The swappiness=60 weirdness might just be some obscure interaction >> with the >> workload. If that is the case, it is probably not too important, >> however it >> could be due to a possible oversight in my patch.... >> > > Here is a patch on top of the last one - if you can give it a test > some time, that would be great. > > Thanks > Nick > > Hi Nick, Here are the results for the kswapd2 patch, along with the previous version and the original 2.6.9-rc1-mm3 test. It pretty much looks like a wash between the kswapd and kswapd2 patches. Kernel Version 2.6.9-rc1-mm3: Total I/O Avg Swap min max pg cache min max ----------- --------- ------- ------ --------- ------- ------- 0 274.80 MB/s 10511 MB ( 5644, 14492) 13293 MB ( 8596, 17156) 20 267.02 MB/s 12624 MB ( 5578, 16287) 15298 MB ( 8468, 18889) 40 267.66 MB/s 13541 MB ( 6619, 17461) 16199 MB ( 9393, 20044) 60 233.73 MB/s 18094 MB ( 16550, 19676) 20629 MB ( 19103, 22192) 80 213.64 MB/s 20950 MB ( 15844, 22977) 23450 MB ( 18496, 25440) 100 164.58 MB/s 26004 MB ( 26004, 26004) 28410 MB ( 28327, 28455) Kernel Version 2.6.9-rc1-mm3-kdb-kswapdfix: Total I/O Avg Swap min max pg cache min max ----------- --------- ------- ------ --------- ------- ------- 0 279.97 MB/s 89 MB ( 12, 265) 3062 MB ( 2947, 3267) 20 283.55 MB/s 161 MB ( 15, 372) 3190 MB ( 3011, 3427) 40 282.32 MB/s 204 MB ( 6, 407) 3187 MB ( 2995, 3331) 60 279.42 MB/s 72 MB ( 15, 171) 3091 MB ( 3027, 3155) 80 283.34 MB/s 920 MB ( 144, 3028) 3904 MB ( 3106, 5957) 100 160.55 MB/s 26008 MB ( 26007, 26008) 28473 MB ( 28455, 28487) Kernel Version 2.6.9-rc1-mm3-kdb-kswapdfix2: Total I/O Avg Swap min max pg cache min max ----------- --------- ------- ------ --------- ------- ------- 0 282.71 MB/s 247 MB ( 8, 691) 3248 MB ( 2995, 3636) 20 281.96 MB/s 127 MB ( 3, 300) 3097 MB ( 2931, 3283) 40 282.24 MB/s 252 MB ( 16, 417) 3270 MB ( 3059, 3475) 60 281.27 MB/s 404 MB ( 106, 1070) 3414 MB ( 3139, 4068) 80 281.30 MB/s 494 MB ( 204, 662) 3485 MB ( 3187, 3635) 100 160.35 MB/s 26003 MB ( 26003, 26003) 28477 MB ( 28407, 28519) -- Best Regards, Ray ----------------------------------------------- Ray Bryant 512-453-9679 (work) 512-507-7807 (cell) raybry@sgi.com raybry@austin.rr.com The box said: "Requires Windows 98 or better", so I installed Linux. ----------------------------------------------- - 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/