crypto accelerators

Mike Tancsa mike at
Tue Apr 18 23:48:59 UTC 2006

On Mon, 17 Apr 2006 16:44:38 -1000 (HST), in
you wrote:

>I've read here before (or maybe some other freebsd list) that cards
>like the Soekris 1401 don't gain as much as you'd expect due to moving
>packets to/from the card over the PCI bus.  But the context is usually
>one of trying to encrypt packets to increase throughput.
>So the question is whether these cards, regardless of their affect on
>throughput, increase usable CPU cycles?  I have several Soekris 1401
>cards and am wondering if there would be any point to putting them
>into some machines that provide logins over ssh.  These machines are
>generally pretty good spec, 2.4GHz+, 1GB RAM, Intel MBs, mostly
>on-board peripherals.

The only place I found it really helpful for ssh connections was on
our backup server where we had multiple inbound ssh connections (e.g.
10+ at once sending dump piped through ssh) it kept the CPU
utilization down.  If you have just one or two, it doesnt really

Mike Tancsa, Sentex communications
Providing Internet Access since 1994
mike at, (

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