From owner-freebsd-scsi Sat Oct 31 18:09:43 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id SAA20190 for freebsd-scsi-outgoing; Sat, 31 Oct 1998 18:09:43 -0800 (PST) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from solaris.matti.ee (solaris.matti.ee [194.126.98.135]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA20173 for ; Sat, 31 Oct 1998 18:09:40 -0800 (PST) (envelope-from vallo@myhakas.matti.ee) Received: from myhakas.matti.ee (vallo@myhakas [194.126.98.150]) by solaris.matti.ee (8.8.8/8.8.8.s) with ESMTP id EAA12346 for ; Sun, 1 Nov 1998 04:09:32 +0200 (EET) Received: (from vallo@localhost) by myhakas.matti.ee (8.9.1/8.9.1) id FAA00336 for freebsd-scsi@freebsd.org; Sun, 1 Nov 1998 05:09:49 +0200 (EET) (envelope-from vallo) Message-ID: <19981101050949.A291@matti.ee> Date: Sun, 1 Nov 1998 05:09:49 +0200 From: Vallo Kallaste To: freebsd-scsi@FreeBSD.ORG Subject: AIC-7895 and 20.0MB/s transfers Reply-To: vallo@matti.ee Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.2i Organization: =?iso-8859-1?Q?AS_Matti_B=FCrootehnika?= Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org I purchased new motherboard recently which have onboard AIC-7895P chip. All is well but dmesg says that I have 20MB/s transfers only. When working with old ncr controller I have 40MB/s transfers. Some bits from dmesg: ahc0: rev 0x04 int a irq 16 on pci0.18.0 ahc0: aic7895 Wide Channel A, SCSI Id=7, 16/255 SCBs Freeing (NOT implemented) redirected ISA irq 10. ahc1: rev 0x04 int b irq 16 on pci0.18.1 ahc1: aic7895 Wide Channel B, SCSI Id=7, 16/255 SCBs Freeing (NOT implemented) redirected ISA irq 10. ncr0: rev 0x03 int a irq 16 on pci0.19.0 changing root device to da0s1a da0 at ahc0 bus 0 target 6 lun 0 da0: Fixed Direct Access SCSI2 device da0: 20.0MB/s transfers (10.0MHz, offset 8, 16bit), Tagged Queueing Enabled da0: 4350MB (8910423 512 byte sectors: 255H 63S/T 554C) da1 at ahc1 bus 0 target 6 lun 0 da1: Fixed Direct Access SCSI2 device da1: 20.0MB/s transfers (10.0MHz, offset 8, 16bit), Tagged Queueing Enabled da1: 4350MB (8910423 512 byte sectors: 255H 63S/T 554C) cd0 at ncr0 bus 0 target 0 lun 0 cd0: Removable CD-ROM SCSI2 device cd0: 10.0MB/s transfers (10.0MHz, offset 16) cd0: Attempt to query device size failed: NOT READY, Medium not present I feel that this issue was discussed lately somewhere but I'm not sure. What I can do to get back faster transfers ? Vallo Kallaste vallo@matti.ee To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message