Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!psuvax1!psuvm!AWIUNI11!Z00NER01
From: Z00NER01@AWIUNI11.BITNET (Ernst Neuwirth)
Newsgroups: bit.listserv.vmxa-l
Subject: Re: Looking a way to limit interactive CPU utilization
Message-ID: <VMXA-L%90020719111923@DEARN>
Date: 7 Feb 90 19:02:00 GMT
Sender: VM/XA Discussion List <VMXA-L@UGA>
Reply-To: VM/XA Discussion List <VMXA-L@UGA>
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In-Reply-To:  Message of Tue, 6 Feb 90 18:30:35 EST from <MONTANAN@EVALUN11>

Dear Mr. Montanyana,

we have written a REXX-Program that does the following:

it does an INDICATE QUEUE every 10 seconds and sets the relative share
of *normal* users depending on the (real)time since the start of the
transaction. For the first 4 minutes of real time a user gets 100 relative
share, then 80, 60, 50, etc. After more than 300 minutes the relative
share will be 1. Users in Q1 and Q2 get relative share 100.

We use this in production since about April 1989 and it has worked fine
in moving all long production work to the batch system.

Batch machines have a relative share of 50, so they do not normally
influence interactive work.


Ernst Neuwirth, University of Vienna Computer Center.