Hi,

> On Jul 11, 2016, at 10:42 PM, Frank Siebenlist <frank.siebenl...@gmail.com> 
> wrote:

<snipsnip>

> I understand that there may be a few more object-creations and casts involved 
> in the looping, but 500 times slower… that was un unexpected surprise.

As expected. You both get massively increased C call overhead and the worst 
case because you don’t get to hit a block until every 512/8 == 64 updates. 
Alas, openssl speed doesn’t distinguish between the same message sizes but in 
different chunk sizes, but you can at least clearly see the performance 
multiplier for larger messages.

lvh
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