Re: Are there plans to add data compression feature to postgresql?

Grant Allen wrote:
> ...warehouse...DB2...IBM is seeing typical
> storage savings in the 40-60% range

Sounds about the same as what compressing file systems claim:

http://opensolaris.org/os/community/zfs/whatis/
  "ZFS provides built-in compression. In addition to
   reducing space usage by 2-3x, compression also reduces
   the amount of I/O by 2-3x. For this reason, enabling
   compression actually makes some workloads go faster.

I do note that Netezza got a lot of PR around their
compression release; claiming it doubled performance.
Wonder if they added that at the file system or higher
in the DB.