Re: What exactly is our CRC algorithm?

On 2014-11-04 08:21:13 -0500, Robert Haas wrote:
> On Tue, Nov 4, 2014 at 4:47 AM, Heikki Linnakangas
> <hlinnakangas@vmware.com> wrote:
> > I hear none, so committed with some small fixes.
> 
> Are you going to get the slice-by-N stuff working next, to speed this up?

I don't plan to do anything serious with it, but I've hacked up the crc
code to use the hardware instruction. The results are quite good - crc
vanishes entirely from the profile for most workloads. It's still
visible for bulk copy, but that's pretty much it.

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
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