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- Newsgroups: comp.sys.next.hardware
- Path: sparky!uunet!lissie!bbum
- From: bbum@object.com (Bill Bumgarner)
- Subject: Re: New SPARC Classic
- Message-ID: <1992Nov17.220452.3076@object.com>
- Sender: bbum@object.com
- Organization: Objective Technologies,Inc.
- References: <BxtxD6.4CF@research.canon.oz.au>
- Date: Tue, 17 Nov 92 22:04:52 GMT
- Lines: 32
-
- In article <BxtxD6.4CF@research.canon.oz.au> andy@research.canon.oz.au (Andy
- Newman) writes:
- > You want to come and use my machine? (3.0 on a 68040 cube with 32 Mb
- > and an ND board with its own 32Mb) Okay it runs with reasonable
- > performance when you do one thing at a time (i.e. typing this while no
- > mail arives for instance) but start a couple of compiles or get some
- > text scrolling in a terminal window and say bye bye to reasonable
- > response and hello to the puke colo[u]red cursor!
- > --
- > Andy Newman (andy@research.canon.oz.au)
-
- I would like to see any machine that doesn't dog out when running a couple of
- compiles-- even on a loaded machine (40+ MB w/dedicated swap-drive) with the
- memory piping flag on, the system performance goes to hell during compilation.
-
- As far as text scrolling is concerned; scrolling text within a set of 32-bit
- rectangles of screen space (which is what scrolling text really is-- usually
- you are only scrolling a single rectangle, though often the windowmanager is
- forced to scroll a piece of text through multiple, odd-shaped, discontiguous
- hunks of screen space) is a nasty performance hit as well... If the entire
- contents of whatever is being scrolled is cached on the ND, it shouldn't be a
- big deal. But if the image has to be moved across the backplane (either as a
- straightforward bitmap or as a set of graphics primitives), then you get nailed
- on the lack of throughput through the backplane... which isn't terribly high.
-
- Neither of these problems seems to be related to 3.0 as much as related to
- simply asking the computer to do some incredibly busy type stuff...
- --
- Bill Bumgarner <bbum@object.com> | "The devils of truth...
- Objective Technologies, Inc. | steal the souls of the free." -- NIN
- --
- Bill Bumgarner <bbum@object.com> | "The devils of truth...
-