2012/1/4 Simon Riggs <si...@2ndquadrant.com>: > On Wed, Jan 4, 2012 at 9:20 AM, Andres Freund <and...@anarazel.de> wrote: > >> I wonder if CRC32c wouldn't be a good alternative given more and more cpus >> (its in SSE 4.2) support calculating it in silicon. > > We're trying to get something that fits in 16bits for this release. > I'm guessing CRC32c doesn't?
What happens to the problem-detecting performance of a 16 bit part of a CRC32c vs. a real 16 bit checksum? If it is still as good, it might make sense to use the former, assuming that there is a way to easily trigger the silicon support and enough CPUs support it. Nicolas -- A. Because it breaks the logical sequence of discussion. Q. Why is top posting bad? -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
