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Date:      Sat, 14 May 2005 06:49:50 +0200
From:      Andre Oppermann <andre@freebsd.org>
To:        Mike Jakubik <mikej@rogers.com>
Cc:        Marian Durkovic <md@bts.sk>
Subject:   Re: Outgoing speed problems in -CURRENT (was: Re: SOLVED: DegradedTCP performace on Intel PRO/1000)
Message-ID:  <4285836E.3AD4B37@freebsd.org>
References:  <20050505133250.GA73885@us.svf.stuba.sk> <20050506065950.GA1999@us.svf.stuba.sk> <20050507043712.GB28373@xor.obsecurity.org> <1318.172.16.0.199.1115846681.squirrel@172.16.0.1> <1424.172.16.0.199.1115851128.squirrel@172.16.0.1> <3973.172.16.0.199.1116028322.squirrel@172.16.0.1>

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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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