On 3/1/2016 10:19 AM, Tetsuya Mukawa wrote: > On 2016/03/01 11:00, Qiu, Michael wrote: >> On 2/26/2016 4:36 PM, Tetsuya Mukawa wrote: >>> On 2016/02/26 13:29, Tetsuya Mukawa wrote: >>>>
[...] >>>> >>>> BTW, I have set the frontend mergeable off. >>>> I have checked below cases. >>>> - Case1: Disable mergeable feature in virtio-net PMD. >>>> - Case2: Disable mergeable feature in virtio-net PMD and use >>>> '--txqflags=0xf01' option to use simple ring deploying. >>>> Both cases, I still cannot see the drop. >>>> >>>> Anyway, I will send a few patch-series to determine the cause of drop. >>>> So, could you please apply them and check the performance to determine >>>> which cause the drop? >>> Hi Michael, >>> >>> I may find what causes the drop. >>> Could you please restart testpmd on guest when you see the drop, then >>> check performance again? >>> >>> I guess the drop will occur only first time when testpmd on guest and >>> host is connected. >>> Here are rough steps. >>> >>> 1. Start testpmd on host >>> 2. Start QEMU >>> 3. Start testpmd on guest >>> >>> Then you will see the drop. >>> Probably, if testpmd on guest is restarted, then you don't see the drop >>> again. >>> >>> 4. Type 'quit' on guest. >>> 5. Start testpmd on guest again. > Hi Michael, > > I am sorry that above was caused by my miss configuration. > So please ignore it. > If you can have time today, could you please check v7 and v8 performance? Hi, Tetsuya I have tried the qemu case but seems it does not have any difference, maybe my configuration is wrong. What I used to test is container case from Jianfeng. And I make a mistake that V6 compiled by GCC 5.3, but V9 with GCC 4.8, after using the same compiler, the performance almost the same. Thanks, Michael > Thanks, > Tetsuya > >> OK, I will help to tested today. >> >> Thanks, >> Michael >
