From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 31B49B70CA for ; Fri, 17 Feb 2012 14:18:52 +1100 (EST) Message-ID: <1329448724.2892.43.camel@pasglop> Subject: RE: [PATCH V2 RESEND] fsl-sata: I/O load balancing From: Benjamin Herrenschmidt To: Li Yang-R58472 Date: Fri, 17 Feb 2012 14:18:44 +1100 In-Reply-To: <94F013E7935FF44C83EBE7784D62AD3F0574273C@039-SN2MPN1-023.039d.mgd.msft.net> References: <1329284944-17943-1-git-send-email-qiang.liu@freescale.com> <1329439216.2892.36.camel@pasglop> <94F013E7935FF44C83EBE7784D62AD3F0574273C@039-SN2MPN1-023.039d.mgd.msft.net> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Cc: Liu Qiang-B32616 , "jgarzik@pobox.com" , "linuxppc-dev@lists.ozlabs.org" , "linux-kernel@vger.kernel.org" , "linux-ide@vger.kernel.org" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 2012-02-17 at 03:09 +0000, Li Yang-R58472 wrote: > >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. Ok cool. With a bit of luck you guys can send me a new silicon when it's available then :-) (The one in the board you got me seems to be in a socket). Cheers, Ben.