On 03/16/2016 11:25 AM, Sowmini Varadhan wrote: > On (03/16/16 11:19), zhuyj wrote: >> Thanks for your reply. >> Yesterday I made tests with rds-tools. It is very pity that I can >> not reproduce my problem with rds-tools. >> >> But with pktgen tools, I can reproduce this problem easily. And I >> found that if I set the packet size to 17792 or less than this size, >> this problem would not occur. But if I set the packet size > 17792, >> for example 17793, my problem would occur. > I think it might have to do with number of sockets/cpu/cores and > the irq balancing issues. > >> As such, maybe the packet size triggers my problem. I am not sure >> that the packet size will trigger your size. > In my case I did try against netperf request-response (but that is > single threaded) and iperf (but that is unidirectional, i.e., > it is not a bidirectional request-response test) > > perhaps if you share the pktgen config (did you change the > code itself)? some of the i40e experts at intel (who are also > on the to/cc lists of this mail) can try it out themselves? > > I still think that the fundamental problem can be identified > by looking for what's causing the mdd event. > > It must be some type of bug, because ixgbe works fine for me, > and this seems like a regression on that performance. > > --Sowmini > It is busy today. Tomorrow I will share the steps about pktgen tools.
Best Regards! Zhu Yanjun ------------------------------------------------------------------------------ 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
