Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261954AbVBAKyr (ORCPT ); Tue, 1 Feb 2005 05:54:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261989AbVBAKyr (ORCPT ); Tue, 1 Feb 2005 05:54:47 -0500 Received: from webhosting.rdsbv.ro ([213.157.185.164]:47529 "EHLO webhosting.rdsbv.ro") by vger.kernel.org with ESMTP id S261954AbVBAKym (ORCPT ); Tue, 1 Feb 2005 05:54:42 -0500 Date: Tue, 1 Feb 2005 12:54:39 +0200 (EET) From: "Catalin(ux aka Dino) BOIE" X-X-Sender: util@webhosting.rdsbv.ro To: Jens Axboe cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Subject: Re: Strange vmstat output. 2.6.10 Scheduler? In-Reply-To: <20050201104949.GM4137@suse.de> Message-ID: References: <20050201102638.GJ4137@suse.de> <20050201104214.GK4137@suse.de> <20050201104949.GM4137@suse.de> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2437 Lines: 47 > The vmstat you showed had bi and bo at the same time, so it's not so > surprising if bi often suffers if it is seeking all over the map to > write out the big chunk submitted. I understand. > How does it look with write cache enabled? Seems that almost the same: 0 1 12416 6068 6908 816292 0 0 1744 156 1276 1327 16 2 0 82 0 1 12416 6028 6908 816324 0 0 0 0 1270 1237 8 2 0 90 0 1 12416 5988 6908 816324 0 0 0 0 1255 454 2 2 0 96 0 2 12416 5956 6952 816324 0 0 0 80 1277 348 2 1 0 97 0 2 12416 5944 6952 816324 0 0 0 0 1257 322 2 2 0 96 0 2 12416 5960 6952 816324 0 0 0 0 1256 380 2 2 0 96 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 1 2 12416 5960 6952 816324 0 0 0 0 1262 337 2 1 0 97 0 1 12416 4936 6952 817676 0 0 3400 180 1293 5466 31 6 0 63 0 1 12416 5276 6896 817180 0 0 5600 8288 1329 1622 15 4 0 81 0 1 12416 5212 6896 817228 0 0 0 0 1245 1237 7 2 0 91 0 1 12416 5148 6896 817252 0 0 0 0 1250 1313 7 3 0 90 0 1 12416 5152 6896 817284 0 0 0 0 1264 1243 7 2 0 91 0 2 12416 5152 6944 817284 0 0 0 104 1257 377 1 4 0 95 0 2 12416 5160 6944 817284 0 0 0 44 1250 407 2 1 0 97 0 2 12416 5160 6944 817284 0 0 0 0 1265 287 2 0 0 98 0 2 12416 5928 6940 816508 0 0 344 336 1272 384 2 3 0 95 0 1 12416 5608 6892 817088 0 0 4440 140 1246 5390 24 7 0 69 0 1 12416 5584 6848 817140 0 0 7436 612 1268 1707 16 3 0 81 0 1 12416 5960 6848 816480 0 0 5900 8156 1300 1428 9 5 0 86 0 1 12416 5632 6844 816824 0 0 1528 196 1271 1402 15 3 0 82 > Not surprising, there's not much the io scheduler can do for you here. > > -- > Jens Axboe > --- Catalin(ux aka Dino) BOIE catab at deuroconsult.ro http://kernel.umbrella.ro/ - 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/