Date: Sat, 4 Mar 1995 17:52:33 -0800 (PST) From: Steven G Kargl <kargl@troutmask.apl.washington.edu> To: freebsd-current@freefall.cdrom.com (FreeBSD Current) Subject: poor SCSI disk performance Message-ID: <199503050152.RAA00135@troutmask.apl.washington.edu>
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Sources supped on 950303 at 1700 PST. I did a make world, and supped /sys today 950304 at 1645 PST to rebuild the kernel. So, I have the recently revamped SCSI stuff in my system. The system is 486DX66, Adaptec 1742, Maxtor mxt-540-s. `Iozone 16' reports roughly 850KB/s write and 1MB/s read. I looked into using tunefs to improve performance, but nothing I tried seemed to give better results. I should also point out the system fragmentation is below 3%. With the exact hardware and FBSD 1.1.5.1, I was getting numbers around 1.5 to 2MB/s write and 3MB/s read. -- Steven G. Kargl | Phone: 206-685-4677 | Applied Physics Laboratory | Fax: 206-543-6785 | University of Washington |---------------------| 1013 NE 40th St | FreeBSD 2.1-current | Seattle, WA 98105 |---------------------|
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