File caching algorithms of the Sequent Symmetry (DYNIX)

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1 total messages Started by Michael Rys Mon, 03 Jun 1991 11:07

#593

Author: Michael Rys
Date: Mon, 03 Jun 1991 11:07

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I have to time some parallel algorithms which heavily depend on file access.
To measure the real impact of an unbuffered file access, I would like to know
how the file cache works for a Sequent Symmetry under DYNIX 3.0.17 (12 proc).
Is the replacement strategy LRU, LFU? Global, per user or per processor? 

FYI: I am using the uSystem library of UofWaterloo for file handling.

Any information is greatly appreciated.

Michael Rys
Inst. fuer Informationssysteme
Fachgruppe Datenbanken
ETH Zuerich

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