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From: josh@polaris.UUCP
Newsgroups: comp.arch
Subject: Re: Unix kernel locality of reference
Message-ID: <817@polaris.UUCP>
Date: Wed, 21-Jan-87 19:56:30 EST
Article-I.D.: polaris.817
Posted: Wed Jan 21 19:56:30 1987
Date-Received: Sat, 31-Jan-87 06:30:22 EST
References: <14295@amdcad.UUCP>
Reply-To: josh@polaris.UUCP (Josh Knight)
Organization: IBM Research, Yorktown Heights, N.Y.
Lines: 17
Keywords: cache

In article <14295@amdcad.UUCP> phil@amdcad.UUCP (Phil Ngai) writes:
>Have any studies been done on how the kernel's locality of reference
>compares to that of a typical application such as the compiler or
>nroff? I am interested in cache design issues. How big a cache? ...

You might try looking at "Cache Memory Performance in a Unix 
Environment" by Cedel Alexander, William Keshlear, Furrokh Cooper
and Faye Briggs, Computer Architecture News, Volume 14, Number 3,
June 1986, pp. 41-70.  They have lots of numbers and graphs and
the traces they use to drive the cache models are obtained from
a system running Genix and include the kernel, unlike most such
studies.  The traces are obtained by modifying the hardware of
a National 32016 based box.
-- 

	Josh Knight, IBM T.J. Watson Research
 josh@ibm.com, josh@yktvmh.bitnet,  ...!philabs!polaris!josh