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From: cgd@agate.berkeley.edu (Chris G. Demetriou)
Newsgroups: comp.unix.bsd
Subject: Re: mysterious system hangups
Date: 5 Aug 1992 17:40:32 -0700
Organization: Kernel Hackers 'r' Us
Lines: 16
Message-ID: <15pse0INNrqc@agate.berkeley.edu>
References: <1992Aug4.175738.7008@Unibase.SK.CA> <1992Aug5.172213.829@gateway.novell.com>
NNTP-Posting-Host: agate.berkeley.edu
Here's something to throw in the discussion about the "mysterious system
hangups" which occur when there's much-too-much disk activity:
When it's happened to me, and i've been running a kernel with DDB
installed, i've looked around, and, lo and behold, there was *NOTHING*
on any of the run queues, and everything was waiting for disk pages...
Could be a problem about when things are getting wakeup()'d, or
there could be a race condition someplace...
Chris
--
Chris G. Demetriou
cgd@berkeley.edu
I'm not from the computer center, and I'm *NOT* here to help *YOU*!