Date: Sun, 30 Mar 1997 09:47:27 -0600 From: "Jeffrey J. Mountin" <sysop@mixcom.com> To: Dave Gilbert <gilbertd@cs.man.ac.uk> Cc: questions@freefall.freebsd.org Subject: Re: Parallel fsck Message-ID: <3.0.32.19970330094726.00b6f718@mixcom.com>
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At 04:31 PM 3/30/97 +0100, Dave Gilbert wrote: >> The way the man page reads it does the / and then spawns and does the rest >> of the partitions that will be mounted in parallel. > >Thats what I want it to do - but it isn't doing it. Its doing / and >then doing all the rest one at a time. It should be able to do the 3GB >off my IDE, the 4GB off one of my SCSIs and one of the 4GBs off the >other SCSI all in parallel (after its done the 200MB root partition). Think we need some official word here for certainty. >What? You don't think fsck'ing four partitions on the same drive in >parallel would be slower than series?? What about all the head step? As a rule I avoid slow and large drives and generally only have 2 or 3 partitions, but you are correct about the latency involved. Considering that usually you have / and then swap and the /usr on the drive. Guess we are looking for "intelligent parallel fsck" then. In your case this would be greatly desired. Have you tried tinkering with the "maxparallel" flag or looked at the source? FBSD does fsck considerably faster than BSDi and that makes me wonder if it is as thorough. Enuf thinking, time to sleep. 8-) ------------------------------------------- Jeff Mountin - System/Network Administrator jeff@mixcom.net MIX Communications Serving the Internet since 1990
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