Date: Sun, 10 Jan 1999 01:25:54 -0500 (EST) From: Alfred Perlstein <bright@hotjobs.com> To: Greg Lehey <grog@lemis.com> Cc: "Michael G." <mikegoe@ibm.net>, "freebsd-hackers@FreeBSD.ORG" <freebsd-hackers@FreeBSD.ORG> Subject: Re: FreeBSD Cluster Size Message-ID: <Pine.BSF.4.05.9901100120450.37756-100000@bright.fx.genx.net> In-Reply-To: <19990110162913.J8886@freebie.lemis.com>
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On Sun, 10 Jan 1999, Greg Lehey wrote: > On Sunday, 10 January 1999 at 0:45:43 -0500, Michael G. wrote: > > I'm building a chart that describes the different file > > formats and how the cluster size is dependent on the > > partition size (except ofcourse for HPFS). What I need to > > know is what is the cluster size for the FreeBSD > > 3.0-RELEASE? > > I'm sorry, I don't understand what you mean by ``cluster''. The UFS > file system stores file data in blocks and fragments, and metadata in > inodes. It's described in /usr/share/doc/smm/05.fastfs/paper.*. > Typically, block sizes are 4kB or 8 kB, and the corresponding > fragments sizes are 512 bytes and 1 kB. > What he's asking about is if FreeBSD has the same lame problems like DOS (which it does NOT) where if your partition is > x blocks then the minimum block allocation increases. In MS-DOG systems eventually the minimum block size becomes 64k and since DOG doesn't allow for FFS 'frags' you tend to waste quite a bit of space. Anyway in FreeBSD generally the block size is 8k no matter how large the partition, however this IS tuneable depending on what characteristics you desire. You can go higher but then frags get really bad can't you? > > PIC X 10 VALUE "YES! COBOL" > > What language is this? Isn't it COBOL? :) -Alfred > > Greg To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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