Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!bcm!pavlov!rick
From: rick@pavlov.bcm.tmc.edu (Richard H. Miller)
Newsgroups: comp.misc
Subject: Re: Crippled Software (was Ethics of crippler circuitry)
Message-ID: <1416@gazette.bcm.tmc.edu>
Date: 12 Feb 89 22:44:21 GMT
References: <7143@pyr.gatech.EDU> <11630010@hpsmtc1.HP.COM> <4602@tekgvs.LABS.TEK.COM> <750@pccuts.pcc.amdahl.com>
Sender: usenet@bcm.tmc.edu
Reply-To: rick@pavlov.bcm.tmc.edu (Richard H. Miller)
Organization: Baylor College of Medicine, Houston, TX
Lines: 17


On a similar but slightly new thread, EXEC-8 is supplied with a feature to
speed up the Dynamic Allocator (memory). EXEC-8 uses a best fit algorithem to
allocate memory. It is always trying to fit a run into the 'best' location in
memory and, as a side effect, incurrs a fairlt]y high overhead to do this.
Unisys provides a feature for OS-1100 systems to use a first first instead of a
best fit. This results in a substantial reduction in OS overhead. It is
marketed depedning on what type of system you have (the cheapest version is for
the 1100-71 and the most expensive is for the 1100-94). The cost is not trivial
for the feature. Any other examples of this type?



Richard H. Miller                 Email: rick@bcm.tmc.edu
Asst. Dir. for Technical Support  Voice: (713)798-3532
Baylor College of Medicine        US Mail: One Baylor Plaza, 302H
                                           Houston, Texas 77030