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| author | Kevin Traynor <ktraynor@redhat.com> | 2022-11-30 17:39:53 +0000 |
|---|---|---|
| committer | Ilya Maximets <i.maximets@ovn.org> | 2022-12-21 20:58:10 +0100 |
| commit | e9ab15f4f82330e0d7bc33e57d3357fa52f76749 (patch) | |
| tree | 5fef7b31d008d84ab5dd498652d099357380a4aa | |
| parent | 526230bfab09095cf0214c7033382463b9d506cf (diff) | |
| download | openvswitch-e9ab15f4f82330e0d7bc33e57d3357fa52f76749.tar.gz | |
docs: Add documentation for pmd-rxq-show secs parameter.
Add description of new '-secs' parameter in docs. Also, add to NEWS as
it is a user facing change.
Reviewed-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
| -rw-r--r-- | Documentation/topics/dpdk/pmd.rst | 23 | ||||
| -rw-r--r-- | NEWS | 3 |
2 files changed, 21 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:: @@ -22,6 +22,9 @@ Post-v3.0.0 significantly larger core dump files. - Support for travis-ci.org based continuous integration builds has been dropped. + - Userspace datapath: + * Add '-secs' argument to appctl 'dpif-netdev/pmd-rxq-show' to show + the pmd usage of an Rx queue over a configurable time period. v3.0.0 - 15 Aug 2022 |