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Diffstat (limited to 'Documentation/topics/dpdk/pmd.rst')
| -rw-r--r-- | Documentation/topics/dpdk/pmd.rst | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/Documentation/topics/dpdk/pmd.rst b/Documentation/topics/dpdk/pmd.rst index b259cc8b3..88457f366 100644 --- a/Documentation/topics/dpdk/pmd.rst +++ b/Documentation/topics/dpdk/pmd.rst @@ -101,12 +101,20 @@ core cycles for each Rx queue:: .. note:: - A history of one minute is recorded and shown for each Rx queue to allow for - traffic pattern spikes. Any changes in the Rx queue's PMD core cycles usage, - due to traffic pattern or reconfig changes, will take one minute to be fully - reflected in the stats. + By default a history of one minute is recorded and shown for each Rx queue + to allow for traffic pattern spikes. Any changes in the Rx queue's PMD core + cycles usage, due to traffic pattern or reconfig changes, will take one + minute to be fully reflected in the stats by default. - .. versionchanged:: 2.6.0 +PMD thread usage of an Rx queue can be displayed for a shorter period of time, +from the last 5 seconds up to the default 60 seconds in 5 second steps. + +To see the port/Rx queue assignment and the last 5 secs of measured usage +history of PMD core cycles for each Rx queue:: + + $ ovs-appctl dpif-netdev/pmd-rxq-show -secs 5 + +.. versionchanged:: 2.6.0 The ``pmd-rxq-show`` command was added in OVS 2.6.0. @@ -115,6 +123,11 @@ core cycles for each Rx queue:: A ``overhead`` statistics is shown per PMD: it represents the number of cycles inherently consumed by the OVS PMD processing loop. +.. versionchanged:: 3.1.0 + + The ``-secs`` parameter was added to the dpif-netdev/pmd-rxq-show + command. + Rx queue to PMD assignment takes place whenever there are configuration changes or can be triggered by using:: |