From owner-freebsd-current Tue Mar 2 4:10:22 1999 Delivered-To: freebsd-current@freebsd.org Received: from daytona.hkstar.com (daytona.hkstar.com [202.82.3.25]) by hub.freebsd.org (Postfix) with ESMTP id EFB0F14CB8 for ; Tue, 2 Mar 1999 04:10:17 -0800 (PST) (envelope-from c5666305@ursa.hkstar.com) Received: from b1.hkstar.com (b1.hkstar.com [202.82.0.87]) by daytona.hkstar.com (8.9.1/8.9.1) with ESMTP id UAA19750 for ; Tue, 2 Mar 1999 20:09:59 +0800 (HKT) Received: (from c5666305@localhost) by b1.hkstar.com (8.8.8+Sun/8.8.8) id UAA16465 for freebsd-current@freebsd.org; Tue, 2 Mar 1999 20:09:53 +0800 (HKT) From: Chan Yiu Wah Message-Id: <199903021209.UAA16465@b1.hkstar.com> Subject: anyone knows what does it mean To: freebsd-current@freebsd.org Date: Tue, 2 Mar 1999 20:09:52 +0800 (HKT) X-Mailer: ELM [version 2.5 PL0b1] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hello, I recently compile the egcs-1.1.1 and the system report to me that the ahc0:A:0 refuses tagged commands performance non-tagged I/O. The transfer speed drop from 20.00M/s to 3.3 M/s. Is there anyone have the same problem ? Cheers Clarence ======= Part of the dmesg ======= da0 at ahc0 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-2 device da0: 3.300MB/s transfers, Tagged Queueing Enabled ^^^^^ poor performance drop from 20.00 to 3.3 da0: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C) da2 at ahc0 bus 0 target 2 lun 0 da2: Removable Direct Access SCSI-2 device da2: 10.000MB/s transfers (10.000MHz, offset 10) da2: 508MB (1041500 512 byte sectors: 64H 32S/T 508C) cd0 at ahc0 bus 0 target 3 lun 0 cd0: Removable CD-ROM SCSI-2 device cd0: 10.000MB/s transfers (10.000MHz, offset 15) cd0: Attempt to query device size failed: NOT READY, Medium not present da1 at ahc0 bus 0 target 1 lun 0 da1: Fixed Direct Access SCSI-2 device da1: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing Enabled da1: 2063MB (4226725 512 byte sectors: 255H 63S/T 263C) ahc0:A:0: refuses tagged commands. Performing non-tagged I/O ======= Part of the dmesg ======= To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message