Re: Outgoing speed problems in -CURRENT (was: Re: SOLVED: DegradedTCP performace on Intel PRO/1000)

From: Andre Oppermann (andre_at_freebsd.org)
Date: 05/14/05

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    Date: Sat, 14 May 2005 06:49:50 +0200
To: Mike Jakubik <mikej@rogers.com>

    Mike Jakubik wrote:
    >
    > On Thu, May 12, 2005 3:27 am, Marian Durkovic said:
    >
    > >> Seems like i am getting half the performance when sending to the fbsd
    > >> box. Also, enabling jumbo frames does not help, and sometimes even
    > >> yields slightly slower results.
    > >
    > > Yes, that's exactly the problem my patch is addressing - for larger MTU
    > > sizes the TX FIFO is simply too small.
    > >
    > > And the new Intel's driver ver. 2.1.7 for FreeBSD 5.3 has the same bugs.
    >
    > I just tried your patch, but unfortunately it does not seem to affect my
    > problem, the speeds are identical. I am still getting half the performance
    > when sending out. The fact that this also occurs using another machine and
    > a different card, leads me to belive something is broken in -CURRENT.

    net.inet.tcp.sendspace=65536 and try again. 

    -- 
Andre
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