Robert Haas wrote:
Compression is generally bad for performance, though there are certainly exceptions. What it is good for is saving disk space, and that is why people use it.
I don't think disk space is still the primary reason for using compression; shoot.. I can buy a terabyte drive for $150 on newegg and 1.5TB drives are out. I think the primary reason has been slowly moving towards performance. Fast downloads, compressed web sites or simply reading/writing less to/from disk are very common use cases for compression; all increase performance. Basically, compression comonly offers faster data delivery. As long as you utilize a fast compressor, like lzo or zlib "NOT level 9", its a performance win.
-- Andrew Chernow eSilo, LLC every bit counts http://www.esilo.com/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
