RELEASE discs & ISO images (for future)

[Oliver Fromme]

Yoshihiro Ota wrote:
 > Oliver Fromme wrote:
 > > Vadim Goncharov wrote:
 > > > Oliver Fromme wrote:
 > > > > The xorg packages on disc1 occupy 54 MB.  Not really all
 > > > > that much, I think.  The linux base, perl and python occupy
 > > > > another 50 MB together.  The rest are small utility things
 > > > > and dependencies (only a few MB).
 > > > 
 > > > But that is still valuable if geom_ugz is in use.
 > > 
 > > Have you actually tried it?  Providing hard numbers is
 > > more useful than just talking about it.  :-)
 > > 
 > > Here are some numbers:
 > > 
 > >    224655360   7.0-RELEASE-i386-livefs.iso
 > >     94493696   7.0-RELEASE-i386-livefs.iso.uzip (16k cluster)
 > >    110188032   7.0-RELEASE-i386-livefs.iso.uzip (2K cluster)
 > > 
 > > So the difference is 124 MB for 16K cluster size, and
 > > 109 MB for 2K cluster size (which is noticably faster
 > > during access).  Actually the space savings will be a
 > > bit less, because the /boot directory (about 30 MB)
 > > won't be compressed.  So the real gain is probably a
 > > little less than 100 MB in the 2K case.
 > 
 > By the way, the maxmum cluster size is 127k or 130048 with uzip,
 > if you want to maximize the compression ratio.

That would make the live FS painfully slow, and it wouldn't
make a big difference from the default (16K).

It is already noticeably slow with the default cluster size
of 16K on my test machine (a 1 GHz VIA C3), so would rather
prefer to use 2K cluster size, even though compression will
be not quite as good.  (2K is the minimum, less than that
doesn't make sense for CD9660 media because the physical
sector size is 2K.)

Best regards
   Oliver

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