Messages in this thread | | | Date | Fri, 1 Nov 2002 10:50:45 -0500 | From | Gerald Britton <> | Subject | Re: What's left over. |
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On Fri, Nov 01, 2002 at 03:25:01PM +0000, Linus Torvalds wrote: > The question I have is whether such external hardware is even worth it > any more for any standard crypto work. With a regular PCI bus > fundamentally limiting throughput to something like a maximum of 66MB/s > (copy-in and copy-out, and that's so theoretical that it's not even > funny - I'd be surprised if RL throughput copying back and forth over a > PCI bus is more than 25-30MB/s), I suspect that you can do most crypto > faster on the CPU directly these days.
This may be true of a typical workstation or large server, but your router may not have such a modern CPU in it. Crypto accelerators are likely a much bigger win on embedded routers or other small appliances with CPUs such as the AMD Elan or other 486 to Pentium class processors.
-- Gerald
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