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

[pgf at laptop.org]

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?

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