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Path: utzoo!linus!philabs!cmcl2!seismo!umcp-cs!aplvax!marc
From: marc@aplvax.UUCP (Marcus H. Gates)
Newsgroups: net.unix
Subject: 4.2 File System Tuning
Message-ID: <137@aplvax.UUCP>
Date: Tue, 6-Aug-85 09:48:22 EDT
Article-I.D.: aplvax.137
Posted: Tue Aug  6 09:48:22 1985
Date-Received: Thu, 8-Aug-85 01:02:38 EDT
Distribution: net
Organization: JHU/Applied Physics Lab, Laurel, MD
Lines: 12


    Investigating our SLOW 4.2 system and grasping at straws led me
to discover a discrepancy between the documented default value for
fs_rotdelay and the actual default value used when creating a filesystem.

fs(5) says that the default is 2ms while looking at mkfs.c shows that the
value used is 4ms (this fact was also verified using dumpfs). Is 2ms 
better than 4??? Our disks are SI9766's emulating rm05's. Any help
in correctly tuning our filesystems is appreciated.
-- 
					marc gates
					umcp-cs!aplvax!marc