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From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: comp.arch
Subject: Re: register windows
Message-ID: <8801@utzoo.UUCP>
Date: Tue, 20-Oct-87 13:40:24 EDT
Article-I.D.: utzoo.8801
Posted: Tue Oct 20 13:40:24 1987
Date-Received: Tue, 20-Oct-87 13:40:24 EDT
References: <201@PT.CS.CMU.EDU>
Organization: U of Toronto Zoology
Lines: 10
Keywords: register windows, interrupt latency

> ...register window state. If it's big, then interrupt latency and task-switch
> latency are high...

Well, maybe.  If your interrupt handlers are big and complex -- all too
likely these days -- then they will be calling functions, and hence register
windows will speed them up too.  Register windows may end up being a net win
despite context-switch overhead.
-- 
PS/2: Yesterday's hardware today.    |  Henry Spencer @ U of Toronto Zoology
OS/2: Yesterday's software tomorrow. | {allegra,ihnp4,decvax,utai}!utzoo!henry