I'm running zpool version 23 (via ZFS fuse on Linux) and have a zpool with deduplication turned on.
I am testing how well deduplication will work for the storage of many, similar ISO files and so far am seeing unexpected results (or perhaps my expectations are wrong). The ISO's I'm testing with are the 32-bit and 64-bit versions of the RHEL5 DVD ISO's. While both have their differences, they do contain a lot of similar data as well. If I explode both ISO files and copy them to my ZFS filesystem I see about a 1.24x dedup ratio. However, if I have only the ISO files on the ZFS filesystem, the ratio is 1.00x -- no savings at all. Does this make sense? I'm going to experiment with other combinations of ISO files as well... Thanks, Ray _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
