This is a follow up on previous work by Kevin Laatz: http://patches.dpdk.org/project/dpdk/list/?series=24658&state=*
This series is aimed at allowing DPDK applications to expose their CPU usage stats in the DPDK telemetry under /eal/lcore/info. This is a much more basic and naive approach which leaves the cpu cycles accounting completely up to the application. For reference, I have implemented a draft patch in OvS to use rte_lcore_register_usage_cb() and report the already available busy cycles information. https://github.com/rjarry/ovs/commit/643e672fe388e348ea7ccbbda6f5a87a066fd919 Changes since v4: - rte_lcore_usage_cb now takes a pointer to a rte_lcore_usage structure. I chose not to include any API version tracking mechanism since the unsupported/unused fields can simply be left to zero. This is only telemetry after all. Changes since v3: - Changed nomenclature from CPU cycles to TSC cycles in the docstring of rte_lcore_usage_cb. Changes since v2: - Fixed typos in docstrings. - Used if (xxx != NULL) instead of if (xxx) test convention. - Guarded against an unlikely race if rte_lcore_dump() is called by a thread while another one calls rte_lcore_register_usage_cb(NULL). - s/utilization/usage/ - Fixed build on Windows. Changes since v1: - The cpuset field in telemetry is now a JSON list of CPU ids. - Applications must now report their raw CPU cycles counts. The busyness ratio and rate of change is left to external monitoring tools. - Renamed show lcores -> dump_lcores in testpmd. Robin Jarry (4): eal: add lcore info in telemetry eal: allow applications to report their cpu usage testpmd: add dump_lcores command testpmd: report lcore usage app/test-pmd/5tswap.c | 5 +- app/test-pmd/cmdline.c | 3 + app/test-pmd/csumonly.c | 6 +- app/test-pmd/flowgen.c | 2 +- app/test-pmd/icmpecho.c | 6 +- app/test-pmd/iofwd.c | 5 +- app/test-pmd/macfwd.c | 5 +- app/test-pmd/macswap.c | 5 +- app/test-pmd/noisy_vnf.c | 4 + app/test-pmd/rxonly.c | 5 +- app/test-pmd/shared_rxq_fwd.c | 5 +- app/test-pmd/testpmd.c | 39 ++++++++- app/test-pmd/testpmd.h | 14 +++- app/test-pmd/txonly.c | 7 +- lib/eal/common/eal_common_lcore.c | 129 +++++++++++++++++++++++++++++- lib/eal/include/rte_lcore.h | 35 ++++++++ lib/eal/version.map | 1 + 17 files changed, 246 insertions(+), 30 deletions(-) -- 2.38.1
