Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752665Ab2BQDKT (ORCPT ); Thu, 16 Feb 2012 22:10:19 -0500 Received: from db3ehsobe001.messaging.microsoft.com ([213.199.154.139]:50092 "EHLO DB3EHSOBE001.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751484Ab2BQDKR convert rfc822-to-8bit (ORCPT ); Thu, 16 Feb 2012 22:10:17 -0500 X-SpamScore: 3 X-BigFish: VS3(zzzz1202hzzz2dh2a8h668h839h8e2h8e3h946hbe9k) X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI From: Li Yang-R58472 To: Benjamin Herrenschmidt , Liu Qiang-B32616 CC: "linux-ide@vger.kernel.org" , "jgarzik@pobox.com" , "linuxppc-dev@lists.ozlabs.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH V2 RESEND] fsl-sata: I/O load balancing Thread-Topic: [PATCH V2 RESEND] fsl-sata: I/O load balancing Thread-Index: AQHM7Qzfo8jQ2564h0i7EYKSnS53IJZAaMZg Date: Fri, 17 Feb 2012 03:09:54 +0000 Message-ID: <94F013E7935FF44C83EBE7784D62AD3F0574273C@039-SN2MPN1-023.039d.mgd.msft.net> References: <1329284944-17943-1-git-send-email-qiang.liu@freescale.com> <1329439216.2892.36.camel@pasglop> In-Reply-To: <1329439216.2892.36.camel@pasglop> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.193.20.126] Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 582 Lines: 13 >I tried a debian install on the p5020ds here and I find SATA to be >extremely slow, generating millions of interrupts. I think the defaults >should be a lot more aggressive at coalescing. The P5020 has a hardware problem with SATA, making it generate more interrupts than it should. A new revision of the silicon will fix it. - Leo -- 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/