when I was evaluating similar products a couple years ago I found that it
really didn't help to try and worry about spilling the load over to the
main CPU.

benchmarks from the time were

pentium 200 linux 19 connections/sec 100% CPU
RS/6000 233 (RISC) 29 connections/sec 100% CPU
install SSL accelerator 300 connections/sec 10-20% CPU

nowdays the raw machines will be faster, but you also need to have CPU
time to run CGIs etc. I think it's unlikly that you will gain much by
useing your main CPUs (assuming you get an appropriatly sized SSL
accelerator

David Lang


 On Fri, 19 Jan 2001 [EMAIL PROTECTED] wrote:

> Date: Fri, 19 Jan 2001 12:47:02 -0000
> From: [EMAIL PROTECTED]
> Reply-To: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: RE: Rainbow Cryptoswift cards
>
> > -----Original Message-----
> > From: Louis LeBlanc [mailto:[EMAIL PROTECTED]]
> > Sent: 19 January 2001 12:39
> > To: [EMAIL PROTECTED]
> > Subject: Re: Rainbow Cryptoswift cards
> >
> >
> > One quick question, just so I know how to answer when this kind of
> > project comes up:
> > The cryptoswift card provides 'onboard' acceleration of SSL based
> > processing, but the card itself can only handle so many
> > transactions per
> > second.  What happens if your traffic load exceeds the cards ability?
> > can you easily 'spill' that extra work over to the system if you have
> > any room there?
>
> I don't think so. All you can do is add extra cards, or run multiple servers
> (NetAID used 28 servers with a Rainbow card in each one).
>
> You will need to have a rough idea how much traffic you'll have, in order to
> estimate how many cards you'll need. Bear in mind that some of these other
> solutions like the Intel accelerator are based on a Rainbow card anyway.
>
> I'm hoping we can get away with one per machine. First though, I have to
> recompile openssl!
>
> -
> Happy new Millennium - http://www.rog.nmm.ac.uk/mill/index.htm
> John Airey
> Internet Systems Support Officer, ITCSD, Royal National Institute for the
> Blind,
> Bakewell Road, Peterborough PE2 6XU,
> Tel.: +44 (0) 1733 375299 Fax: +44 (0) 1733 370848 [EMAIL PROTECTED]
> ______________________________________________________________________
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