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Newsgroups: comp.unix.bsd Path: sserve!manuel!munnari.oz.au!uunet!gumby!wupost!dsuvax.dsu.edu!ghelmer From: ghelmer@dsuvax.dsu.edu (Guy Helmer) Subject: ESDI disk performance under 386BSD Message-ID: <1992Aug14.170148.22228@dsuvax.dsu.edu> Organization: Dakota State University Date: Fri, 14 Aug 1992 17:01:48 GMT Lines: 17 Having been running 386bsd 0.1 on a 25Mhz 386 w/ WD1007V-SE2 controller connected to a Wren VI (330Mb) disk and 16Mb of memory, I've noticed that the system seems seriously disk-bound. Any work on the disk drive seems to take forever - mkdir takes a few seconds to execute; extracting a tar file brings the system to a crawl. Not knowing much about BSD internals yet, I am wondering if there is a fairly simple answer to the obvious question of how to improve the disk's performance. The only thing that comes to mind is the possibility that the disk driver is too slow and doesn't keep up with the disk's interleave, requiring one whole revolution of the disk for each sector read. Any thoughts on things I could tune or code I could rewrite :-) ? -- Guy Helmer, Dakota State University Computing Services - ghelmer@dsuvax.dsu.edu White congressmen can't jump, but they sure can bounce.