On Thu, 3 Dec 2009, Erik Ableson wrote:

Much depends on the contents of the files. Fixed size binary blobs that align nicely with 16/32/64k boundaries, or variable sized text files.

Note that the default zfs block size is 128K and so that will therefore be the default dedup block size.

Most files are less than 128K and occupy a short tail block so concatenating them will not usually enjoy the benefits of deduplication.

It is not wise to riddle zfs with many special-purpose features since zfs would then be encumbered by these many features, which tend to defeat future improvements.

Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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