On Tue, 4 May 2004, James Morris wrote:
>>On Tue, 4 May 2004, Eugene Surovegin wrote:
>>
>> In short, my experience showed that without significant changes in current
>> implementation, e.g. adding async crypto, adding hardware crypto is worth only
>> for relatively slow CPUs, e.g. less than 1Ghz, and even with slow processor
>> overhead can be so big, that short packets are better processed by software
>> path.
>
>Yes, have a look at the OpenBSD paper at
>http://www.openbsd.org/papers/ocf.pdf
>
>Their results show marked performance improvements for larger packets
>(even though the packets are making multiple trips across the PCI bus),
>and they suggest batching smaller packets.
>
>
>
>- James
>--
>James Morris
><jmorris@xxxxxxxxxx>
The FreeBSD version of the OCF is a bit more interesting:
http://www.usenix.org/publications/library/proceedings/bsdcon03/tech/leffler_crypto/leffler_crpto_html/
/dave_koplos
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