Thanks for the report. The stats are showing true dropped packets at the NIC level. You do not have any no buffer counts so it's like the interrupts aren't being serviced fast enough. So some things to check are: - are the interrupts configured correctly? (error reports in the system log) - are interrupts being shared between the NIC and another device in the system? - are there other types of error messages in the system log files? - if you load and use the 1.0.2 driver (available on our Sourceforge site) with the newer Linux OSes, does the problem still happen?
Please let us know. Cheers, John > -----Original Message----- > From: Carsten Aulbert [mailto:carsten.aulb...@aei.mpg.de] > Sent: Thursday, January 26, 2012 2:07 AM > To: e1000-de...@lists.sf.net > Cc: Henning Fehrmann > Subject: [E1000-devel] High number of rx_missed_errors when chaning > from 1.0.2-k2 to 1.2.20-k2/1.5.1-k > > Hi all > > on our old venerable compute nodes, we have 2 e1000e driven network > connections (82573E/82573L combo -) > > Currently we are upgrading from Debian Lenny to Debian Squeeze and > during this process also upgrade from 2.6.32.y vanilla to 3.2.x vanilla > (but see the same with Debian's default kernel 2.6.32-z). The e1000e > version thus changes from > 1.0.2-k2 to 1.2.20-k2 or 1.5.1-k2. > > The standard testcase is running > > goodhost: > dd if=/dev/zero | nc badhost 55555 > badhost: > nc -l -p 55555 > /dev/null > > with 1.0.2-k2 and default options (except crcstripping=0) we get close > to 120 MB/s and no dropped packets. > > rebooting the system to a kernel with a newer driver yields only 150- > 250kB/s throughput and a packet drop-rate close to 20%.. > > I'm attaching quite a number of files to this post, but would like to > learn how to find out, what's wrong and how to fix it. > > This error seemed to be popping up here and there on this list and > elsewhere, but so far I've yet to find a definite answer ... > > Cheers && TIA > > Carsten > -- > Dr. Carsten Aulbert - Max Planck Institute for Gravitational Physics > Callinstrasse 38, 30167 Hannover, Germany > Phone/Fax: +49 511 762-17185 / -17193 > http://www.top500.org/system/9234 | http://www.top500.org/connfam/6 > CaCert Assurer | Get free certificates from http://www.cacert.org/ ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
