Path: utzoo!attcan!uunet!husc6!mailrus!cornell!uw-beaver!rice!sun-spots-request
From: nesheim@think.com
Newsgroups: comp.sys.sun
Subject: Sun-4 slows down like molasses
Message-ID: <8812161526.AA07799@loki.think.com>
Date: 24 Dec 88 20:31:02 GMT
Sender: usenet@rice.edu
Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
Original-Date: Fri, 16 Dec 88 10:26:37 EST
X-Sun-Spots-Digest: Volume 7, Issue 75, message 3 of 11

> From:    sitongia@hao.ucar.edu (Leonard Sitongia)
> 
> We have seen a bizarre phenomenon on this machine.  Periodically (happened
> three times today) it will appear that the system has died in that
> directly connected terminals and rlogins hang up on terminals that are
> logged in and when an attempt is made to log in usually there is no
> response or maybe login is allowed but no motd is printed (or other stuff
> the user may do in the .login) and then the terminal hangs.  The system
> appears to have become tremendously busy. {B^D>
...

I've seen this happen when you run out of STREAMS buffers.  When the
machine gets into a weird state, do a "netstat -m" and look at the stream
allocation table.  If you see allocation failures you will have to
increase the stream parameters.  Look at
/usr/share/sys/sun?/YOURMACHINE/param.c for the lines that define NBLKXXX.
Up them until you no longer get stream allocation failures.

-- Bill Nesheim; Thinking Machines Corporation, Cambridge, MA +1 617-876-1111
   nesheim@think.com, {harvard,bloom-beacon,topaz}!think!nesheim