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Re: Linus' sha1 is much faster!




I also wanted to include Linus' sha1 in our software at work.
But the GPLv2 license was incompatible.
Too bad it is just just in the public domain.
I grabbed Steve Reid's public domain code from 1999
and ran it. It produced the same output.
I ran it on a 3GB input file, and Linus' code from 2009 takes 37 to 40
seconds.
(Just reading the file in the same 4k buffers only takes 3 seconds 
so disk reading does not dominate the time.)
When I ran Steve's old version on the same input it was taking just 36 or 37
seconds.
So it is slightly faster.
Have compilers improved?
I am using gcc 4.4.7-17.





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