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    "id": 41424,
    "url": "",
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    "project": {
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        "name": "DPDK",
        "link_name": "dpdk",
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        "scm_url": "git://",
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    "msgid": "<>",
    "date": "2018-06-23T08:08:38",
    "name": "[v4,0/2] testpmd: simulating noisy host environment",
    "submitter": {
        "id": 512,
        "url": "",
        "name": "Maxime Coquelin",
        "email": ""
    "mbox": "",
    "series": [
            "id": 213,
            "url": "",
            "web_url": "",
            "date": "2018-06-23T08:08:38",
            "name": "testpmd: simulating noisy host environment",
            "version": 4,
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        "Date": "Sat, 23 Jun 2018 10:08:38 +0200",
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        "Sender": "\"dev\" <>",
        "Subject": "[dpdk-dev] [PATCH v4 0/2] testpmd: simulating noisy host environment",
        "Precedence": "list",
        "From": "Maxime Coquelin <>",
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        "Cc": ",,,\n\,,\n\,,\n\tMaxime Coquelin <>",
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    "content": "This forth version is a rebase of Jen's v3, fixing meson build\nand checkpatch errors.\nSome checkpatch warnings remain to keep consistency with other\ncode.\n\nThis series adds a new forwarding mode 'noisy'.  It proposes\nenhancements to testpmd to simulate more realistic behavior of a guest\nmachine engaged in receiving and sending packets performing Virtual\nNetwork Function (VNF).\n\nThe goal is to enable simple of measuring performance impact on cache and\nmemory footprint utilization from various VNF co-located on the\nsame host machine.\n\nThis series of patches adds the new command line switches to\ntestpmd:\n\n--noisy-buffersize-before-sending [packet numbers]\n\nKeep the mbuf in a FIFO and forward the over flooding packets from the\nFIFO. This queue is per TX-queue (after all other packet processing).\n\n--noisy-flush-timeout [delay]\nFlush the packet queue if no packets have been seen during\n[delay]. As long as packets are seen, the timer is reset.\n\n\nOptions to simulate route lookups:\n\n--noisy-memory-footprint [size]\nSize of the VNF internal memory (MB), in which the random\nread/write will be done, allocated by rte_malloc (hugepages).\n\n--noisy-nb-rnd-write [num]\nNumber of random writes in memory per packet should be\nperformed, simulating hit-flags update. 64 bits per write,\nall write in different cache lines.\n\n--noisy-nb-rnd-read [num]\nNumber of random reads in memory per packet should be\nperformed, simulating FIB/table lookups. 64 bits per read,\nall write in different cache lines.\n\n--noisy-nb-rnd-read-write [num]\nNumber of random reads and writes in memory per packet should\nbe performed, simulating stats update. 64 bits per read-write, all\nreads and writes in different cache lines.\n\nJens Freimann (2):\n  testpmd: add forwarding mode to simulate a noisy neighbour\n  testpmd: update testpmd doc to include noisy forwarding mode\n\n app/test-pmd/Makefile                       |   1 +\n app/test-pmd/                    |   1 +\n app/test-pmd/noisy_vnf.c                    | 204 ++++++++++++++++++++++++++++\n app/test-pmd/noisy_vnf.h                    |  41 ++++++\n app/test-pmd/parameters.c                   |  54 ++++++++\n app/test-pmd/testpmd.c                      |  52 +++++++\n app/test-pmd/testpmd.h                      |  17 +++\n doc/guides/testpmd_app_ug/run_app.rst       |  27 ++++\n doc/guides/testpmd_app_ug/testpmd_funcs.rst |   7 +-\n 9 files changed, 402 insertions(+), 2 deletions(-)\n create mode 100644 app/test-pmd/noisy_vnf.c\n create mode 100644 app/test-pmd/noisy_vnf.h"