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From: john@chook.ua.oz (John Warburton)
Newsgroups: comp.sys.encore
Subject: Re: UMAX 4.3 - waiting processes ??
Message-ID: <1272@sirius.ucs.adelaide.edu.au>
Date: 2 Aug 90 07:04:55 GMT
References: <1201@sirius.ucs.adelaide.edu.au>
Sender: news@ucs.adelaide.edu.au
Lines: 28

From article <1201@sirius.ucs.adelaide.edu.au>, by john@chook.ua.oz.au (John Warburton):
>
>       Now that the machine is up in multi-user mode, the problem has reared
> its head again. Commands are just randomly put on hold for a few seconds and
> are then executed. We can sometimes get a glimpse of the process when it is
> waiting, using 'ps', with a STAT of S - a semaphore wait.
>
well, well, well,
what can I say........

The problem has been fixed - by replacing the root disk!!?!

We had been getting these disk errors on the root disk rather sporadically.
We ignored it for the first couple of days, but as the semaphore wait problem
escalated, we looked anywhere for a possible cause.

Well, we just replaced the disk a couple of hours ago, and response time has
been blissfuly fast!

We had root disk problems the last time we upgraded the operating system.
Maybe with the next set of distribution tapes for an upgrade, they should
include a new Wren V for just this sort of thing :-)

John
John Warburton                          Phone   : +61 8 228 5583
Department of Computer Science          Telex   : UNIVAD AA89141
University of Adelaide                  Fax     : +61 8 223 1206
GPO Box 498 Adelaide SA 5001            ACSnet  : john@cs.ua.oz