Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!snorkelwacker.mit.edu!bloom-beacon!eru!hagbard!sunic!mcsun!unido!opal!tmpmbx!scuzzy!src From: src@scuzzy.in-berlin.de (Heiko Blume) Newsgroups: comp.unix.sysv386 Subject: Re: Why do you want a 512 byte block file system anyway? Message-ID: <1990Nov21.203420.2688@scuzzy.in-berlin.de> Date: 21 Nov 90 20:34:20 GMT References: <1990Nov18.182135.17954@scuzzy.in-berlin.de> <1990Nov19.232124.7802@cichlid.com> Distribution: comp Organization: Contributed Software Lines: 43 tim@delluk.uucp (Tim Wright) writes: >aab@cichlid.com (Andy Burgess) writes: >>src@scuzzy.in-berlin.de (Heiko Blume) writes: >>>p.s.: i want a 512Byte filesystem for news, so speed is not an issue. >>I just did an ls -l /usr/spool/news/comp/unix/sysv386 and I didn't see one >>file less then 512 bytes long. Most (estimate 90%) were over 1024 bytes >>long. Doesn't this mean 512 byte block buys you nothing? >Reduced waste of space due to wasting on average 1/4K in the last block >instead of 1/2K. you bet! i did a little statistic: size | count -------+------ <= 512 : 3665 <= 1024: 10524 <= 1536: 12610 <= 2048: 7784 >= 2048: 12411 total : 46994 savings on 23790 files no savings on 23204 files i'd have >12MB more space with a 512Byte filesystem! which yields quite a percentage (~15%) for a 76MB filesystem... >I think the original problem may have been down to not >specifying the FSTYPE to fsck and mount - they may not autodetect - I can't >remember for sure. the manual says: if you don't specify the type and it fails to mount it as the root fstype it will try to find out with /etc/fstyp. but that yields S51K.... as i haven't found any fs types other than S51K, S52K, XENIX and DOS, what shall i tell mount ?? -- Heiko Blume <-+-> src@scuzzy.in-berlin.de <-+-> (+49 30) 691 88 93 public source archive [HST V.42bis]: scuzzy Any ACU,f 38400 6919520 gin:--gin: nuucp sword: nuucp uucp scuzzy!/src/README /your/home