Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pasteur!ucbvax!hoptoad!gnu
From: gnu@hoptoad.uucp (John Gilmore)
Newsgroups: comp.arch
Subject: Sun-3/50 speed variations
Message-ID: <4238@hoptoad.uucp>
Date: 25 Mar 88 11:34:03 GMT
References: <4076@vdsvax.steinmetz.ge.com> <3505@cbmvax.UUCP>
Organization: Grasshopper Group in San Francisco
Lines: 10

barnett@vdsvax.steinmetz.ge.com (Bruce G. Barnett) says:
> I still don't understand how one Sun 3/50 can be 40% faster than another.

Curiously enough, the video display eats about 40% of the memory
bandwidth -- unless you turn it off (/usr/bin/screenblank).  Then it
goes down into the noise (just enough to refresh RAM).  Without the
video on, a 3/50 is about the same speed as a 3/160.  Perhaps the
benchmark was run "over the net" on a screen-blanked machine?
-- 
{pyramid,ptsfa,amdahl,sun,ihnp4}!hoptoad!gnu			  gnu@toad.com
		"Watch me change my world..." -- Liquid Theatre