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Re: GSoc2010 project suggestion: swcryptX
On Feb 22, 2010, at 1:12 PM, Hubert Feyrer wrote:
> The communication overhead involves data transfers over a PCI bus, which
> is of relatively low speed compared to today's modern CPUs. Preventing the
> data transfer is a worthwhile goal. In coordination with today's modern
> multi-core CPUs, using one or more CPUs solely for the purpose of crypto
> acceleration, a measurable improvement of crypto performance is expected.
> At the same time, no special hardware requirements beyond the CPU exist.
> This allows turning standard contemporary systems into fast crypto systems
I'm skeptical. If a particular thread of execution has to wait for the crypto
to happen anyway, let it do it work itself.
This would have been vaguely interesting a few years ago before our kernel was
as MP-capable as it is today. But given where we are now, I don't see this as
having much of a benefit, and maybe it will even slow stuff down.
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