Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ukma!xanth!lll-winken!uunet!rick
From: rick@uunet.UU.NET (Rick Adams)
Newsgroups: comp.unix.wizards
Subject: Re: is this wise?
Summary: overhead?
Message-ID: <54270@uunet.UU.NET>
Date: 8 May 89 15:33:08 GMT
References: <9321@alice.UUCP>
Organization: UUNET Communications Services, Falls Church, VA
Lines: 18

> In particular, Rick Adams's reductions to absurdity are
> quite close to things that the Plan 9 system (as opposed to
> Ninth Edition) actually does; as many of its abstractions
> as possible are mapped into the file system.

Do they really spend 3 system calls to get the clock time
(open,read,close) or do they have some other scheme?

It seems like a hell of a lot of work to find out something simple
like the time of day. (Or am I still stuck in the past when
performance mattered?)

How far does plan 9 take the clock as a file analogy? Do they
reset the clock if root does a seek on it?

What about things like getpid or getppid?

--rick