On 2016/03/02 11:24, Qiu, Michael wrote: > 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.
Hi Michael, Sorry for late replying. And thanks for your checking. Thanks, Tetsuya > Thanks, > Michael > > >> Thanks, >> Tetsuya >> >>> OK, I will help to tested today. >>> >>> Thanks, >>> Michael
