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From: benson@alcatraz.ksr.com (Benson Margulies)
Newsgroups: comp.arch
Subject: Re: Do every object based systems suffer from poor performance ?
Message-ID: <114@ksr.UUCP>
Date: Sun, 17-May-87 13:34:02 EDT
Article-I.D.: ksr.114
Posted: Sun May 17 13:34:02 1987
Date-Received: Sun, 17-May-87 19:48:46 EDT
References: <6055@shemp.UCLA.EDU> <1831@hplabsc.UUCP>
Sender: nobody@ksr.UUCP
Reply-To: benson@ksr.UUCP (Benson Margulies)
Distribution: world
Organization: Kendall Square Research, Cambridge MA
Lines: 24
Keywords: capability, object, 80286, 432

In article <1831@hplabsc.UUCP> kempf@hplabsc.UUCP (Jim Kempf) writes:
>> 	performance ? (I know that at least the current object or capability
>
>The statement that "every object based system" has poor performance is
>simply not true. Software object based systems on conventional hardware
>can get performance which is very good. 

I think that there has to be a distinction betwen object oriented
programming and capability architecture. A capability architecture is
a lot more than a hardware implementation of object orientated
programming. It is a particular approach to data security/integrity.
You can have a completely conventional programming environment on a
capability environment, where a capability is just a pointer to a
piece of data structure. YOu can do object oriented programming on
hardware that don't know anything from Security.

The Symbolics 36xx series has architectural support for flavors, but
not a hint of a capability.



Benson I. Margulies                         Kendall Square Research Corp.
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