Re: multiple crypto accelerator cards in one FreeBSD box

From: Sam Leffler (sam_at_errno.com)
Date: 02/18/05

  • Next message: Sam Leffler: "Re: multiple crypto accelerator cards in one FreeBSD box" 
    Date: Thu, 17 Feb 2005 21:21:36 -0800
To: sekchye goh <sekchye@gmail.com>

    sekchye goh wrote:
    > Hi there!
    > we are thinking of deploying a IPSEC VPN concentrator using multiple PCI bus
    > version VPN1401 cards in a FreeBSD box using hifn support..
    > From the technical specs in Soekris website
    > http://www.soekris.com/vpn1401.htm,
    > each card can support 24 to 70 connections. The question is if we
    > put 3 VPN1401 cards in a single box, does this mean the FreeBSD box can support
    > 3 x (24 to 70) IPSEC connections ?
    >

    Not sure where the 24-70 connection numbers come from. If it's based on
    alllocating session state in on-chip SDRAM then that was removed a while
    ago by moving the session state allocation to host memory. If the
    numbers are representative of peak performance then I'd be curious where
    they came from. Understand that you're likely to be bus-limited for
    performance and adding additional cards isn't going to help unless cards
    are on separate pci buses. Beware however that the current crypto code
    does not manage multiple cards well. If you decide to go with multiple
    cards you'll want to do some load balancing.

            Sam
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  • Next message: Sam Leffler: "Re: multiple crypto accelerator cards in one FreeBSD box"

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