Date: Tue, 18 Apr 2006 19:48:58 -0400 From: Mike Tancsa <mike@sentex.net> To: Dave Cornejo <dave@dogwood.com> Cc: freebsd-net@freebsd.org Subject: Re: crypto accelerators Message-ID: <bjua42ds5esbkeek8v8a9qelhtbebteqm4@4ax.com> In-Reply-To: <200604180244.k3I2icZj076600@white.dogwood.com> References: <200604180244.k3I2icZj076600@white.dogwood.com>
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On Mon, 17 Apr 2006 16:44:38 -1000 (HST), in sentex.lists.freebsd.net 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 matter ---Mike -------------------------------------------------------- Mike Tancsa, Sentex communications http://www.sentex.net Providing Internet Access since 1994 mike@sentex.net, (http://www.tancsa.com)
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