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From: mark%umcp-cs@udel-relay@sri-unix.UUCP
Newsgroups: net.unix-wizards
Subject: file save AND nicing.
Message-ID: <4307@sri-arpa.UUCP>
Date: Wed, 24-Aug-83 00:27:09 EDT
Article-I.D.: sri-arpa.4307
Posted: Wed Aug 24 00:27:09 1983
Date-Received: Fri, 19-Aug-83 02:00:44 EDT
Lines: 12

From:  Mark Weiser <mark%umcp-cs@udel-relay>

Here is merged response to several recent topics.
We run our whole system file saves multi-user.  After noticing
that they took much longer this way (not too surprising),
we started nicing the dumping program to -18 (pretty heavy priority).
Did this help?  Not very much.  What good is a nice if even
when you are not very nice at all it hardly buys a thing.

The problem is apparently that dump mostly is doing i/o, and somehow
being very negatively nice doesn't help it get buffers and things
fast as it needs them.