Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!cme!libes
From: libes@cme.nbs.gov (Don Libes)
Newsgroups: comp.unix.wizards
Subject: Re: overhead of namei (was: ... would you want in the GNU OS?)
Keywords: GNU OS features kernel fun!
Message-ID: <1245@muffin.cme.nbs.gov>
Date: 5 Jun 89 13:55:39 GMT
References: <106326@sun.Eng.Sun.COM> <395@amc-gw.UUCP> <5021@stiatl.UUCP> <400@amc-gw.UUCP> <201@sopwith.UUCP>
Reply-To: libes@cme.nbs.gov (Don Libes)
Organization: National Institute of Standards and Technology
Lines: 14

In article <201@sopwith.UUCP> snoopy@sopwith.UUCP (Snoopy) writes:
>"With the addition of the two caches, the percentage of system time
>devoted to name translation dropped from 25 percent to less than 10
>percent."
>
>	_The Design and Implementation of the 4.3BSD UNIX Operating System_
>		by Leffler, McKusick, Karels, and Quarterman
>
>It appears that namei() soaks up more cycles than one might expect.

You misunderstood the quote.  It doesn't say anything about percentage
of *total* system time.

Don Libes          libes@cme.nbs.gov      ...!uunet!cme-durer!libes