Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759204AbYGCMum (ORCPT ); Thu, 3 Jul 2008 08:50:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756237AbYGCMub (ORCPT ); Thu, 3 Jul 2008 08:50:31 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:55279 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756212AbYGCMua (ORCPT ); Thu, 3 Jul 2008 08:50:30 -0400 Message-ID: <486CCB12.7040205@garzik.org> Date: Thu, 03 Jul 2008 08:50:26 -0400 From: Jeff Garzik User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Justin Piszcz CC: linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Veliciraptor HDD 3.0gbps but UDMA/100 on PCI-e controller? References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.4 (----) X-Spam-Report: SpamAssassin version 3.2.4 on srv5.dvmed.net summary: Content analysis details: (-4.4 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2162 Lines: 65 Justin Piszcz wrote: > On the motherboard itself (all drives configured for AHCI) > > [ 2.360648] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > [ 2.678244] ata1.00: ATA-8: WDC WD3000GLFS-01F8U0, 03.03V01, max > UDMA/133 > [ 2.678594] ata1.00: 586072368 sectors, multi 0: LBA48 NCQ (depth 31/32) > [ 2.684566] ata1.00: configured for UDMA/133 > > On the PCI-e cards: > > [ 16.136568] ata11: SATA link up 3.0 Gbps (SStatus 123 SControl 0) > [ 16.155682] ata11.00: ATA-8: WDC WD3000GLFS-01F8U0, 03.03V01, max > UDMA/133 > [ 16.156545] ata11.00: 586072368 sectors, multi 16: LBA48 NCQ (depth > 31/32) > [ 16.162949] ata11.00: configured for UDMA/100 > > How come the PCI-e card configured the drive for UDMA/100 and not UDMA/133? > > Perhaps the PCI-e card/driver does not configure/have AHCI > functionality, or? > > The mobo: Intel DG965WH > The card: 03:00.0 RAID bus controller: Silicon Image, Inc. SiI 3132 > Serial ATA Raid II Controller (rev 01) You need to show us the full dmesg. We cannot see which controller is applying limits here. You need to look at the controller's maximum, as that controls the drive maximum (pasted from my personal workstation): scsi0 : ahci scsi1 : ahci scsi2 : ahci scsi3 : ahci ata1: SATA max UDMA/133 abar m1024@0x90404000 port 0x90404100 irq 507 ata2: SATA max UDMA/133 abar m1024@0x90404000 port 0x90404180 irq 507 ata3: SATA max UDMA/133 abar m1024@0x90404000 port 0x90404200 irq 507 ata4: SATA max UDMA/133 abar m1024@0x90404000 port 0x90404280 irq 507 scsi4 : sata_sil scsi5 : sata_sil scsi6 : sata_sil scsi7 : sata_sil ata5: SATA max UDMA/100 mmio m1024@0x9000c800 tf 0x9000c880 irq 17 ata6: SATA max UDMA/100 mmio m1024@0x9000c800 tf 0x9000c8c0 irq 17 ata7: SATA max UDMA/100 mmio m1024@0x9000c800 tf 0x9000ca80 irq 17 ata8: SATA max UDMA/100 mmio m1024@0x9000c800 tf 0x9000cac0 irq 17 See the UDMA difference? Jeff -- 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/