Re: HalfSipHash Acceptable Usage

[Theodore Ts'o]

On Wed, Dec 21, 2016 at 01:37:51PM -0500, George Spelvin 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.

And "with enough registers" includes ARM and MIPS, right?  So the only
real problem is 32-bit x86, and you're right, at that point, only
people who might care are people who are using a space-radiation
hardened 386 --- and they're not likely to be doing high throughput
TCP connections.  :-)

					- Ted