Date: Fri, 14 Sep 2012 09:12:27 -0500 From: Soren Dreijer <dreijer+bsd@echobit.net> To: Ian Smith <smithi@nimnet.asn.au> Cc: freebsd-ipfw@freebsd.org, Luigi Rizzo <rizzo@iet.unipi.it> Subject: Re: Significant network latency when using ipfw and in-kernel NAT Message-ID: <CALoZf3hxdEcwXLVLi9Xdx2S%2Bv45-GNQo4b4XVcn-fGhB4y1Z%2Bw@mail.gmail.com> In-Reply-To: <20120914144529.R51539@sola.nimnet.asn.au> References: <CALoZf3hfZDQQ4ZEXMrGUkYiGvb5QPoAcbpUikAq1adqVY4fLyg@mail.gmail.com> <20120913221758.E51539@sola.nimnet.asn.au> <CALoZf3iCf1_fHgAWUXa3fgudOe66sbk35P0CYhgsneBuhCORJg@mail.gmail.com> <20120913163013.GA22049@onelab2.iet.unipi.it> <CALoZf3iRzx5V=1th32LE8OCa0_GTBNGSZeGuH9qTp4Fk1j3ZRw@mail.gmail.com> <20120913174612.GB22571@onelab2.iet.unipi.it> <CALoZf3jRpcryGE0TXxdmZ0d6eD1KbJTY-KaNQEiUPuBuPzWtBA@mail.gmail.com> <20120914144529.R51539@sola.nimnet.asn.au>
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Can anybody confirm that disabling these other options (rxcsum, txcsum, vlanmtu, vlanhwtag, vlanhwfilter, vlanhwtso) won't cause my adapter to lose its connectivity? This is a server in production and I'd rather not cause an outage if I can prevent it. :) On Fri, Sep 14, 2012 at 12:00 AM, Ian Smith <smithi@nimnet.asn.au> wrote: > On Thu, 13 Sep 2012 12:37:23 -0500, Soren Dreijer wrote: > [Luigi Rizzo wrote:] > > > i'd start by disabling all accelerations (and jumobgrams) > > > and then move on from the results to figure out where is the problem. > > > > So, I went ahead and disabled TSO on ix0. That seemed to fix the > > intermittent connection issues I had been experiencing with keeping an > > XMPP connection alive to one of our internal boxes. It hasn't done > > anything for the ICMPs or TCP traffic originating from the FreeBSD > > box, of course. > > Please show ifconfig for ix0 and ix1 again after disabling tso, > rxcsum, txcsum, vlanmtu, vlanhwtag, vlanhwfilter, vlanhwtso > and any other configured accelerations, as Luigi recommended? > > Then we'd know if your problem was related to any of that, or not. > > cheers, Ian
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