Date: Thu, 5 Jun 1997 18:48:13 -0400 From: Charles Henrich <henrich@crh.cl.msu.edu> To: freebsd-hackers@freebsd.org Subject: Extremely poor interactive response under heave SCSI load Message-ID: <19970605184813.26023@crh.cl.msu.edu>
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Has anyone else noticed that a system with a large mount of unused (hence disk
cache) ram while under heavy SCSI load (or not so heavy really, e.g:
tar tvf crh.tgz > /tmp/crh.tgz.ls) causes interactive response to go into the
toilet, and any other disk I/O takes an eternity to complete? For example,
when doing that tar tvf of a 650mb file, it took over 30 seconds for mutt to
load and run, any operation that hit disk was delayed at least 30 seconds..
Any ideas on a rememdy/tunable for this? (Im using an adaptec 2940)
-Crh
Charles Henrich Michigan State University henrich@msu.edu
http://pilot.msu.edu/~henrich
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