On Thu, 2012-01-26 at 02:06 -0800, Carsten Aulbert wrote: > 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%.. >
Hi Carsten, it sounds to me like this might be related to ASPM, can you try the boot option pcie_aspm=off before you do that please capture the output of lspci -vvv and attach it to the bug (or send it here I suppose) also include ethtool -e ethX output as an attachment, I'm interested to see some settings in your eeprom. > 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 ... as John said, rx_missed with no rx_no_buffer_count means that you're dropping packets in hardware which typically means that something is going wrong at the bus level or the PCIe transaction level, that ends up delaying packets, due to long memory latencies or something like that (just typical problems, not saying it is exactly your issue) aspm is one of those causes, there can be others ------------------------------------------------------------------------------ Try before you buy = See our experts in action! 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-dev2 _______________________________________________ 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
