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From: laukee@canon.co.uk (David Lau-Kee)
Newsgroups: comp.windows.news
Subject: Re: 5 times faster?
Message-ID: <1990Oct12.091914.1919@canon.co.uk>
Date: 12 Oct 90 09:19:14 GMT
References: <1990Oct10.154744.12240@cs.columbia.edu>
Reply-To: laukee@canon.co.uk
Organization: Canon Research Europe, Guildford, UK
Lines: 33

djk@cs.columbia.edu (David Kurlander) writes:
>The advertisements for the newest version of OpenWindow/XNeWS claim
>that it's five times faster than the last release.  Would either
>someone at Sun or people that are now using the new version elaborate
>on this.  Has low level imaging been sped up, or just window creation
>and manipulation?

Purely subjective, so your mileage may vary...

The imaging seems to be no faster, but the window creation, etc. can be
faster.

The '5 x' claim seems a little outlandish to me, but I guess that it depends a
great deal on what hardware you've got.  On a 4/110 with CG4 and 16Mb we
noticed an improvement in speed at the window level, but on a 4/60 with CG6+GX
and 16Mb we noticed little or no improvement.  I hear from others that OW2
gains most in 8Mb environments, which I don't doubt since the server is much
smaller.
Some things slow down.  Text, for example, seems to be slower.  I think this
is an X conformance load.

I'd say that whilst switching from Sunview to OW1 gave an agonising drop in
subjective,	interactive, window-level performance, switching from SV to OW2
is merely painful, and from OW1 to OW2 could actually be quite pleasant.
Bite the bullet.  It could be worth it.

-------------
David Lau-Kee
Canon Research Centre Europe,
17/20 Frederick Sanger Rd, Surrey Research Park, Guildford, Surrey, GU25YD, UK.
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