Date: Sat, 15 Sep 2012 03:59:03 +1000 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Soren Dreijer <dreijer+bsd@echobit.net> 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: <20120915034627.V51539@sola.nimnet.asn.au> In-Reply-To: <CALoZf3hxdEcwXLVLi9Xdx2S%2Bv45-GNQo4b4XVcn-fGhB4y1Z%2Bw@mail.gmail.com> 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> <CALoZf3hxdEcwXLVLi9Xdx2S%2Bv45-GNQo4b4XVcn-fGhB4y1Z%2Bw@mail.gmail.com>
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On Fri, 14 Sep 2012 09:12:27 -0500, Soren Dreijer wrote: > 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. :) Fair question Soren. I've configured no VLANs; out of my depth, again! cheers, Ian > 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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