Hi Shimamoto-san, (2014/09/11 17:36), Hiroshi Shimamoto wrote: > Hi Mukawa-san, > >> Subject: Re: [dpdk-dev] [memnic PATCH 0/7] MEMNIC PMD performance improvement >> >> Hi Shimamoto-san, >> >> >> (2014/09/11 16:45), Hiroshi Shimamoto wrote: >>> From: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com> >>> >>> This patchset improves MEMNIC PMD performance. >>> >>> The first patch introduces a new benchmark test run in guest, >>> and will be used to evaluate the following patch effects. >>> >>> This patchset improves the throughput results of memnic-tester. >>> Using Xeon E5-2697 v2 @ 2.70GHz, 4 vCPU. >> How many cores are you actually using for sending and receiving? > In this case, I use 4 dedicated cores pinned to each vCPU, > so the answer is 4 cores, more precisely 2 cores for the test DPDK App. > >> I guess 1 dedicated core is used for sending on host or guest side, and >> one more dedicated core is for receiving on the other side. >> And you've got a following performance result. >> Is this correct? > I think you can see the test details in the first patch.
Thank you so much. I haven't checked it yet. It seems it's very nice performance! I wanna compare it with vhost example one. Thanks, Tetsuya Mukawa > The test is done in guest only because I just want to know the > PMD performance only. The host does nothing in the test. > In guest 1 thread = 1 dedicated core emulates packet send/recv > by turning flag on/off. On the other hand another thread, also > pinned 1 dedicated core, does rx_burst and tx_burst. > The test measures how much packets can be received and transmitted > by MEMNIC PMD. > This results means that if host can sends and receives packets in > enough performance, how much throughput the guest application can > achieve. > > thanks, > Hiroshi > >> Thanks, >> Tetsuya Mukawa >> >>> size | before | after >>> 64 | 4.18Mpps | 5.83Mpps >>> 128 | 3.85Mpps | 5.71Mpps >>> 256 | 4.01Mpps | 5.40Mpps >>> 512 | 3.52Mpps | 4.64Mpps >>> 1024 | 3.18Mpps | 3.68Mpps >>> 1280 | 2.86Mpps | 3.17Mpps >>> 1518 | 2.59Mpps | 2.90Mpps >>> >>> Hiroshi Shimamoto (7): >>> guest: memnic-tester: PMD benchmark in guest >>> pmd: remove needless assignment >>> pmd: use helper macros >>> pmd: use compiler barrier >>> pmd: packet receiving optimization with prefetch >>> pmd: add branch hint in recv/xmit >>> pmd: split calling mbuf free >>> >>> guest/Makefile | 20 ++++ >>> guest/README.rst | 94 +++++++++++++++++ >>> guest/memnic-tester.c | 281 >>> ++++++++++++++++++++++++++++++++++++++++++++++++++ >>> pmd/pmd_memnic.c | 43 ++++---- >>> 4 files changed, 417 insertions(+), 21 deletions(-) >>> create mode 100644 guest/Makefile >>> create mode 100644 guest/README.rst >>> create mode 100644 guest/memnic-tester.c >>>