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Date:      Thu, 24 Nov 2011 19:13:39 -0600
From:      Kris Bauer <kristoph.bauer@gmail.com>
To:        Adrian Chadd <adrian@freebsd.org>
Cc:        "freebsd-stable@freebsd.org List" <freebsd-stable@freebsd.org>
Subject:   Re: TCP Reassembly Issues
Message-ID:  <CAPNZ-Wr8r%2Bz7u%2BT3xgY3dfwhEZkN27NebrXzaXmXmneWpMw8xA@mail.gmail.com>
In-Reply-To: <CAJ-VmokMrJipptQWjuhY5-41p=-P2-xc3ze1p4JKTXWz3MgtzA@mail.gmail.com>
References:  <CAPNZ-Wq38=F3o2hYuYF_unBj3SZQ52XhVhdcwQ8PE_vU9xc2YA@mail.gmail.com> <CABLqceRyohFFYtdnW%2Bt%2B63kwk00cbkJVz3oXWqrR=xijkg14CA@mail.gmail.com> <4ECE9914.6020502@turing.b2n.org> <CAPNZ-WrQdjFEErt6K1uEndSc082q8Q48VHvtbP=5cNXFw7H7Rg@mail.gmail.com> <1A5B3A48-7DF3-4018-A244-152BDE96299A@lassitu.de> <CAJ-VmokMrJipptQWjuhY5-41p=-P2-xc3ze1p4JKTXWz3MgtzA@mail.gmail.com>

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On Thu, Nov 24, 2011 at 5:35 PM, Adrian Chadd <adrian@freebsd.org> wrote:

> Have you tried disabling the tcp offload features of your NIC?
>
>
> Adrian
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To test this, I added net.inet.tcp.tso=0 to sysctl.conf and restarted the
box; it didn't work.  net.inet.tcp.reass.cursegments immediately started
climbing up and were exhausted within an hour.

Kris.



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