Messages in this thread | | | Subject | Re: [kernel-hardening] Re: HalfSipHash Acceptable Usage | From | Rik van Riel <> | Date | Wed, 21 Dec 2016 11:39:45 -0500 |
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On Wed, 2016-12-21 at 07:56 -0800, Eric Dumazet wrote: > On Wed, 2016-12-21 at 15:42 +0100, Jason A. Donenfeld wrote: > George said : > > > Cycles per byte on 1024 bytes of data: > > Pentium Core 2 Ivy > > 4 Duo Bridge > > SipHash-2-4 38.9 8.3 5.8 > > HalfSipHash-2-4 12.7 4.5 3.2 > > MD5 8.3 5.7 4.7 > > > That really was for 1024 bytes blocks, so pretty much useless for our > discussion ? > > Reading your numbers last week, I thought SipHash was faster, but > George > numbers are giving the opposite impression. > > I do not have a P4 to make tests, so I only can trust you or George.
Does anybody still have a P4?
If they do, they're probably better off replacing it with an Atom. The reduced power bills will pay for replacing that P4 within a year or two.
In short, I am not sure how important the P4 performance numbers are, especially if we can improve security for everybody else...
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