[Server-devel] RW Compressed FUSE FSs? (Re: XS - XO archiving and backup)

[pgf at laptop.org]

bill wrote:
 > On Mon, Nov 10, 2008 at 2:34 PM,  <pgf at laptop.org> wrote:
 > > martin wrote:
 > >  > On Mon, Nov 10, 2008 at 11:17 AM, Tomeu Vizoso <tomeu at tomeuvizoso.net> 
 > wrote:
 > >  > > I would get a real journal and check for real which is the
 > >  > > compressibility of the data that is actually there.
 > >  >
 > >  > On a test machine with a good cross-section of activity documents, I
 > >  > gzipped all the files in the datastore directory. Only 6% storage
 > >  > savings according to the gzip stats - higher if I only look at the
 > >  > metadata files (avg 12%). Several files had negative compression
 > >  > ratios.
 > >  >
 > >  > So your suspicions seem correct - compression is a marginal win at
 > >  > best for ds-backup.
 > >
 > > i assume we're already doing duplicate checks in order to avoid
 > > storing the same present-on-every-client executable N times, right?
 > 
 > Ds-backup only backs up files in the XO users journal so except for
 > downloaded *.xo bundles there won't be any?? 'executables'.  i.e. You

ah, thanks.

paul
=---------------------
 paul fox, pgf at laptop.org
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