Date: Thu, 1 Jul 2010 18:56:38 -0700 From: Pyun YongHyeon <pyunyh@gmail.com> To: Garrett Cooper <yanefbsd@gmail.com> Cc: Anders Nordby <anders@freebsd.org>, src-committers@freebsd.org, Ken Smith <kensmith@buffalo.edu>, jdc@parodius.com, svn-src-stable@freebsd.org, svn-src-all@freebsd.org, svn-src-stable-7@freebsd.org, marcel@freebsd.org, Pyun YongHyeon <yongari@freebsd.org> Subject: Re: svn commit: r208995 - stable/7/sys/dev/bge Message-ID: <20100702015638.GM7090@michelle.cdnetworks.com> In-Reply-To: <AANLkTimjE3RVzUY4jEaUqJtBoQ3HJFyZ_uD5yutZmtqe@mail.gmail.com> References: <201006101804.o5AI4PEX024259@svn.freebsd.org> <20100629074831.GA75332@fupp.net> <1277820825.55649.7.camel@bauer.cse.buffalo.edu> <20100701215218.GC7090@michelle.cdnetworks.com> <AANLkTimjE3RVzUY4jEaUqJtBoQ3HJFyZ_uD5yutZmtqe@mail.gmail.com>
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On Thu, Jul 01, 2010 at 06:28:35PM -0700, Garrett Cooper wrote: > On Thu, Jul 1, 2010 at 2:52 PM, Pyun YongHyeon <pyunyh@gmail.com> wrote: > > On Tue, Jun 29, 2010 at 10:13:45AM -0400, Ken Smith wrote: > >> On Tue, 2010-06-29 at 09:48 +0200, Anders Nordby wrote: > >> > Is it possible to get this fix into FreeBSD 7.3-RELEASE? > >> > >> We typically rely on developers to decide if fixes might warrant > >> consideration as an Errata Notice and send email to re@ suggesting > >> it. ?It's hard for us to judge on our own - factors include things > >> like the individual developers' confidence level in the fix, etc. > >> > > > > Even though I didn't receive positive feedback from jumbo frame > > users I'm pretty sure the change set will fix regression introduced > > in r199011. As you might know, the bug was not detected for a very > > long time(about 6 months) so I think it's better to wait 2 or 3 > > weeks to get more confidence on the patch. > > If you have jumbo packet functional tests, I'll gladly run it on some > r200 machines we have in the lab with bge(4) cards sometime in the > next couple of weeks. If not, I'll have to produce the tests which > will take longer. I'll see whether or not some of the test code in > http://wiki.freebsd.org/VictorBilouro/TCP-IP_regression_test_suite > addresses this. > To reproduce the issue you should be able to generate very high rate of PPS and make kernel resource shortage condition. It would be hard to trigger the issue with self-clocking protocols like TCP. Alternatively, patching driver to add intentional delays and reducing number of available mbufs may help to trigger the issue. > >> If someone(s) were to send mail to re@ suggesting this be an > >> Errata Notice given your description here we would definitely > >> consider it seriously. ?As far as the general process goes that's > >> the first step. > > Thanks! > -Garrett
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