Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!unido!opal!tmpmbx!utopia!scuzzy!src From: src@scuzzy.in-berlin.de (Heiko Blume) Newsgroups: comp.unix.internals Subject: Re: File system performance Message-ID: <1990Nov05.031547.11369@scuzzy.in-berlin.de> Date: 5 Nov 90 03:15:47 GMT References: <267@srchtec.UUCP> <1990Oct19.130404.25352@nstar.uucp> <1990Oct31.120401.4814@nstar.uucp> <1990Oct31.212543.28245@ico.isc.com> Organization: Scuzzy Research Center (SRC) Lines: 16 pcg@cs.aber.ac.uk (Piercarlo Grandi) writes: >Note that the gap should be dependent on the *CPU* and ther kernel >speed, not on the drive (for a given rotational speed). The filesystem >gap is there to compensate for interrupt and processing time. sure, but how do i determine a optimal gap for a given system. since i have three different disk drives varying from real-slow to fast this should be very interesting! that is, there are between 32 and 51 sectors/track on those and the drives using zone bit recording have more on the outer tracks. the mkfs man page and the admin guide tell near to nothing about it. -- Heiko Blume c/o Diakite blume@scuzzy.in-berlin.de FAX (+49 30) 882 50 65 Kottbusser Damm 28 blume@scuzzy.mbx.sub.org VOICE (+49 30) 691 88 93 D-1000 Berlin 61 blume@netmbx.de TELEX 184174 intro d scuzzy Any ACU,f 38400 6919520 ogin:--ogin: nuucp ssword: nuucp [HST,V.42bis]