Re: HalfSipHash Acceptable Usage

[Jason A. Donenfeld]

On Wed, Dec 21, 2016 at 7:37 PM, George Spelvin
<linux@xxxxxxxxxxxxxxxxxxx> wrote:
> SipHash annihilates the competition on 64-bit superscalar hardware.
> SipHash dominates the field on 64-bit in-order hardware.
> SipHash wins easily on 32-bit hardware *with enough registers*.
> On register-starved 32-bit machines, it really struggles.
>
> As I explained, in that last case, SipHash barely wins at all.
> (On a P4, it actually *loses* to MD5, not that anyone cares.  Running
> on a P4 and caring about performance are mutually exclusive.)

>From the discussion off list which examined your benchmark code, it
looks like we're going to move ahead with SipHash.