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- Newsgroups: comp.sys.next.hardware
- Path: sparky!uunet!ukma!wupost!udel!rochester!cantaloupe.srv.cs.cmu.edu!ddj
- From: ddj+@cs.cmu.edu (Doug DeJulio)
- Subject: Re: New RISC workstations / 88110 demise
- Message-ID: <BxBCpM.65B.2@cs.cmu.edu>
- Keywords: RISC
- Sender: news@cs.cmu.edu (Usenet News System)
- Nntp-Posting-Host: itc.cs.cmu.edu
- Organization: School of Computer Science, Carnegie Mellon
- References: <1992Nov2.170741.2092@jhunix.hcf.jhu.edu> <Bx5Iwn.to.2@cs.cmu.edu> <1992Nov5.070604.2071@cubetech.com>
- Date: Fri, 6 Nov 1992 21:22:31 GMT
- Lines: 22
-
- In article <1992Nov5.070604.2071@cubetech.com> andrew@cubetech.com writes:
- >Dedicating processors is stupid (a whole P5 for sound? what a waste).
- >Let mach split everything up on all the processors and use thread
- >priorities to ensure good interactive performance.
-
- I'd buy this argument *IF* NeXT's OS had good realtime support.
- However Mach 2.0 (upon which NeXT mach is based) is just not a
- realtime OS, and you can't do realtime operations with it. User
- interaction needs to be done by realtime tasks. That's the main
- reason I was reccomending dedicated chips. No realtime means no
- reliable synched animation and sound, which sucks on a multimedia
- workstation.
-
- If NeXT upgraded to Mach 3, perhaps they could get realtime
- performance by running the display and sound servers at a higher
- priority than the Unix emulation task, but in Mach 2 the unix
- emulation is built into the Mach kernel so that can't be done.
- Correct me if I'm wrong.
-
- --
- Doug DeJulio
- ddj+@cmu.edu
-