Hi, I have the similar problem. Would you like to make tests with pktgen tools? Maybe the test result is not related with tso.
Zhu Yanjun On 03/15/2016 05:43 AM, Sowmini Varadhan wrote: > Hi, > > I am trying out some DB stress tests on both i40e and ixgbe. The > stress test that I use is rds-stress (http://linux.die.net/man/1/rds-stress), > and I can list out the entire set of steps and parameters that I > am using to run this if that info is interesting. > > My test bed is a pair of X5-2 (Haswell) servers, each with a > Niantic (X540-AT2) card and a Fortville card. The Niantic/fortville > cards are connected back-to-back, so I essentially have a 10G > connection and a 40G connection. > > Everything else (kernel, RDS modules, stress test and parameters) > remaining the same, I get the expected throughput on the 10G > connection, but the i40e connection goes through a lot of TX > errors that result in console messages like this: > > i40e 0000:81:00.0: TX driver issue detected, PF reset issued > i40e 0000:81:00.0 eth2: adding 68:05:ca:30:db:30 vid=0 > i40e 0000:81:00.0: TX driver issue detected, PF reset issued > i40e 0000:81:00.0 eth2: VSI_seid 390, Hung TX queue 32, tx_pending: 82, > NTC:0xeb, HWB: 0xeb, NTU: 0x13d, TAIL: 0x13d > i40e 0000:81:00.0 eth2: VSI_seid 390, Issuing force_wb for TX queue 32, > Interrupt Reg > > I understand these are "mdd errors", but how can I find out what > triggered these errors, any hints? > > The other data-point here is that if I disable tso, and fall back > to gso, there are no tx errors, and throughput matches the 10G > connection (for the same set of test parameters). > > Please let me know if there is any other info that would help. > The kernel is a 4.5.0-rc2 kernel. Info for the i40e card is > > # ethtool -i eth3 > driver: i40e > version: 1.4.8-k > firmware-version: 5.02 0x80002285 0.0.0 > bus-info: 0000:81:00.1 > : > > Thanks in advance, > --Sowmini > > ------------------------------------------------------------------------------ > Transform Data into Opportunity. > Accelerate data analysis in your applications with > Intel Data Analytics Acceleration Library. > Click to learn more. > http://pubads.g.doubleclick.net/gampad/clk?id=278785231&iu=/4140 > _______________________________________________ > 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 ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785231&iu=/4140 _______________________________________________ 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
