On 2011/03/31 12:46, Otto Moerbeek wrote: > > > > In general, the default values and algorithms for allocations could > > probably do with a tune-up, since of course today's disks are several > > magnitudes larger than only a few years ago (let alone than those that > > were around when the bulk of the file system code was written!), and the > > usage patterns are also in my experience often wildly different in a > > large file system than in a smaller one. > > We do that already, inode density will be lower for newly created > partitions, because diskalbel sets larger block and fragment sizes.
Ah, the manual is out-of-date. Index: newfs.8 =================================================================== RCS file: /cvs/src/sbin/newfs/newfs.8,v retrieving revision 1.68 diff -u -p -r1.68 newfs.8 --- newfs.8 21 Mar 2010 07:51:23 -0000 1.68 +++ newfs.8 31 Mar 2011 11:10:18 -0000 @@ -169,7 +169,7 @@ The expected average file size for the f The expected average number of files per directory on the file system. .It Fl i Ar bytes This specifies the density of inodes in the file system. -The default is to create an inode for each 8192 bytes of data space. +The default is to create an inode for every 4 fragments. If fewer inodes are desired, a larger number should be used; to create more inodes a smaller number should be given. .It Fl m Ar free-space
