From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Schmidt Subject: (solved) Re: Fw: 2.6.11-mm2 weird ethernet RTTs Date: Sat, 19 Mar 2005 14:54:12 +0100 Message-ID: <20050319135412.GA5134@giscard.mcbone.net> References: <20050317115254.4f8e462a.akpm@osdl.org> <20050318091140.GE30259@giscard.mcbone.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@oss.sgi.com To: Andrew Morton Content-Disposition: inline In-Reply-To: <20050318091140.GE30259@giscard.mcbone.net> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org On Fri, Mar 18, 2005 at 10:11:40AM +0100, Stefan Schmidt wrote: > > I'm not aware of any changes which would cause this. Generally -mm's > > networking is the same as Linus's. Could you test Linus's latest tree? > > (-rc1 should be out very soon, so that would be appropriate) > 2.6.10-mm1 was the kernel i ran before 2.6.11-mm2 on this machine which > did not show this behaviour. I will try the latest vanilla as soon as > i'm in office. Perhaps this problem is e1000-driver inflicted, i am > using it as a module - will try latest vanilla with the same setup. I tried booting 2.6.12-rc1. It hung 50% of the time intermittent with a harddisk DMA timeout due to some weird things on irq 117 and the other time a kernel BUG in e1000 was triggered for which i will open another thread. Anyway i saw in a wink that ide_cd reported to CD-ROM drive to do weird things and removed the thing. The system went up fine after that and ping RTTs were back to what i experienced before that whole story. I labeled the delinquent device 'CD-ROM drive of doom' and just assumed that it behave so bad on the other IDE bus (not the one the HD is attached too) that the IDE-Controller was hogged up with handling that bus and either generated some interrupts by itself or was not able to respond to them properly anymore. The CD-ROM drive also gives interesting rattling noises when shaken - its a LG 52x, don't have the model # at hand now. Stefan -- A day without fusion is like a day without sunshine.