[Haskell-cafe] Re: [darcs-devel] announcing darcs 2.0.0pre3

[Peter Verswyvelen]

Maybe a dedicated SIMD version of SHA1?

http://arctic.org/~dean/crypto/sha1.html
<http://arctic.org/%7Edean/crypto/sha1.html>
Cheers,
Peter

David Roundy wrote:
> On Wed, Jan 23, 2008 at 03:26:51PM +0000, Simon Marlow wrote:
>   
>> There are still times when I see nothing happening, for example in the 
>> unpull test on the GHC repo (see previous messages), the last progress 
>> message I get is
>>
>> Reading patches in /64playpen/simonmar/ghc-darcs2 17040
>>
>> and it sits there for 7-8 seconds before completing.  Does this maybe shed 
>> any light on why this unpull is 2 times slower than darcs1?
>>     
>
> I'm not entirely certain what's triggering this, but I have identified that
> removing a couple of sha1 checks cuts 1s out of 15s for me.  This makes me
> wonder whether it's worth looking into a faster sha1 implementation.
>   

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