Date: Mon, 24 May 1999 11:08:34 -0700 (PDT) From: delaitt@cpc.wmin.ac.uk To: freebsd-gnats-submit@freebsd.org Subject: kern/11872: change of disk throughput when using FreeBSD-3.2-STABLE Message-ID: <19990524180834.3585615437@hub.freebsd.org>
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>Number: 11872 >Category: kern >Synopsis: change of disk throughput when using FreeBSD-3.2-STABLE >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon May 24 11:10:01 PDT 1999 >Closed-Date: >Last-Modified: >Originator: Thierry Delaitre >Release: 3.2-STABLE FreeBSD 3.2-STABLE >Organization: Centre for Parallel Computing >Environment: FreeBSD seth.cpc.wmin.ac.uk 3.2-STABLE FreeBSD 3.2-STABLE #2: Mon May 24 15:12:26 BST 1999 root@seth.cpc.wmin.ac.uk:/usr/src/sys/compile/SETH i386 >Description: The problem is that the throughput of the SCSI disk was set to 80MB/s when using FreeBSD-3.2-19990522-STABLE but the throughput has now been set to 11MB/s when using FreeBSD 3.2-STABLE I updated my kernel sources using cvsup. This is particularly strange ! da0 at ahc0 bus 0 target 0 lun 0 May 23 11:23:11 gnu /kernel: da0: <QUANTUM VIKING II 4.5WLS 4110> Fixed Direct Access SCSI-2 device May 23 11:23:11 gnu /kernel: da0: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing Enabled May 23 11:23:11 gnu /kernel: da0: 4350MB (8910423 512 byte sectors: 255H 63S/T 554C) da0 at ahc0 bus 0 target 0 lun 0 da0: <QUANTUM VIKING II 4.5WLS 4110> Fixed Direct Access SCSI-2 device da0: 11.626MB/s transfers (5.813MHz, offset 31, 16bit) da0: 4350MB (8910423 512 byte sectors: 255H 63S/T 554C) >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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