Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751233AbWEPPd3 (ORCPT ); Tue, 16 May 2006 11:33:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751234AbWEPPd3 (ORCPT ); Tue, 16 May 2006 11:33:29 -0400 Received: from py-out-1112.google.com ([64.233.166.180]:65243 "EHLO py-out-1112.google.com") by vger.kernel.org with ESMTP id S1751233AbWEPPd2 convert rfc822-to-8bit (ORCPT ); Tue, 16 May 2006 11:33:28 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=sLlRAsSs4Kb50o11GU+4lrgxkKw879wzKv2ToFVCLwZktBVAr5qByUIyj+d1YgMJTbfmWlDoM/Kzl/zbOJtNbT+sONgDCabHS8Pxrz/NVUpi0PI117aJ8ErU6pYDhLBdYyAcfV25MXaVrXiYRoe/4TIR3icoPtpKhnGkvWSP+Mc= Message-ID: <3b0ffc1f0605160833k5f6355c5n3f2a9ab1b211a95@mail.gmail.com> Date: Tue, 16 May 2006 11:33:27 -0400 From: "Kevin Radloff" To: "Alan Cox" Subject: Re: PATCH: Fix broken PIO with libata Cc: linux-kernel@vger.kernel.org, "Tejun Heo" , jgarzik@pobox.com, torvalds@osdl.org In-Reply-To: <1147790393.2151.62.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <1147790393.2151.62.camel@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2025 Lines: 38 On 5/16/06, Alan Cox wrote: > The revaldiation in 2.6.17-rc has broken support for PIO only devices. > This is fairly unusual in the SATA world but showed up rather more > promptly with the added PATA drivers. Excellent; this seems to have solved my oops on CF card insertion problem. :) However, I still have a problem with pata_pcmcia (that I actually experienced also with the ide-cs driver) where sustained reading or writing to the CF card spikes the CPU with nearly 100% system time. Here's a few seconds of 'vmstat 5' with a 'cat /dev/sdb > /dev/null' in the middle of it: procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 1 1 0 502608 13304 254740 0 0 164 42 1089 618 7 2 85 5 1 1 0 495440 20472 254740 0 0 1434 7 1078 1079 1 95 0 4 1 1 0 487264 28664 254740 0 0 1638 8 1073 1063 1 95 0 4 1 1 0 479940 35832 254740 0 0 1434 50 1077 1087 1 95 0 4 1 1 0 472320 43000 254740 0 0 1434 15 1078 1093 10 86 0 4 1 1 0 465104 50168 254740 0 0 1434 56 1077 1053 6 90 0 4 1 1 0 456944 58360 254740 0 0 1638 8 1072 1063 1 94 0 5 1 1 0 449744 65528 254740 0 0 1434 3 1073 1069 1 94 0 5 1 1 0 441600 73720 254740 0 0 1638 5 1072 1071 1 95 0 4 1 1 0 434020 80888 254740 0 0 1434 0 1074 1087 11 85 0 4 0 0 0 428896 86008 254740 0 0 1024 3 1184 1313 4 83 11 3 0 0 0 428896 86008 254740 0 0 0 5 1105 1057 1 0 98 0 -- Kevin 'radsaq' Radloff radsaq@gmail.com http://thesaq.com/ - 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/