2012/1/4 Simon Riggs <simon@2ndquadrant.com>:
> On Wed, Jan 4, 2012 at 9:20 AM, Andres Freund <andres@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?
