svn commit: r184753 - head/usr.sbin/sysinstall

[Raphael Becker]

On Fri, Nov 07, 2008 at 10:01:31PM +0000, Marc Fonvieille wrote:
> +		  "This will give you ready access to over 19,000 ported software packages,\n"
> +		  "at a cost of around 445MB of disk space when \"clean\" and possibly\n"


I see around 700M here, my ports are configured "read-only", so all
work/, packages/ distfiles/ and so on are outside /usr/ports, updates
are done by cvsup:

# df -mi /usr/ports/
Filesystem 1M-blocks Used Avail Capacity iused  ifree %iused  Mounted on
/dev/md0        1039  712   119    86%  129743 478895   21%   /usr/ports

# du -sm /usr/ports/ 
713     /usr/ports/

It heavily depends on inode-sizes.

I have about 130k inodes in use which cause a "theoretical minimum" 
of 508MB disk on filesystems with 4k inode-density, about 1G with 8k
inodes (default is 8k, see by newfs(8))

 -i bytes
   Specify the density of inodes in the file system.  The default is
   to create an inode for every (4 * frag-size) bytes of data space.

 -f frag-size
   The fragment size of the file system in bytes.  It must be a
   power of two ranging in value between blocksize/8 and blocksize.
   The default is 2048 bytes.


An uncompressed tarball (without the "inode-overhead") of 
/usr/ports/ is around 600MB here:

# tar cf - /usr/ports/ | wc -c
tar: Removing leading '/' from member names
 629196800

or 600MB.

How did you measure / calculate 445MB? 

Regards
Raphael

-- 
Raphael Becker          <rabe at uugrn.org>          http://rabe.uugrn.org/
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