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| author | Kevin Traynor <ktraynor@redhat.com> | 2017-08-25 00:48:01 -0700 |
|---|---|---|
| committer | Darrell Ball <dlu998@gmail.com> | 2017-08-25 00:48:01 -0700 |
| commit | 655856ef39b98dd854a2a764b1b2e88a020e3099 (patch) | |
| tree | a466d57bbfa9897f4be7a62751e13d28bf391b91 /Documentation | |
| parent | 4809891b2e017dda95bb9cbacd470d0065fc7ce4 (diff) | |
| download | openvswitch-655856ef39b98dd854a2a764b1b2e88a020e3099.tar.gz | |
dpif-netdev: Change rxq_scheduling to use rxq processing cycles.
Previously rxqs were assigned to pmds by round robin in
port/queue order.
Now that we have the processing cycles used for existing rxqs,
use that information to try and produced a better balanced
distribution of rxqs across pmds. i.e. given multiple pmds, the
rxqs which have consumed the largest amount of processing cycles
will be placed on different pmds.
The rxqs are sorted by their processing cycles and assigned (in
sorted order) round robin across pmds.
Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Darrell Ball <dlu998@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/howto/dpdk.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/howto/dpdk.rst b/Documentation/howto/dpdk.rst index d7f6610be..a67f3a1fa 100644 --- a/Documentation/howto/dpdk.rst +++ b/Documentation/howto/dpdk.rst @@ -118,6 +118,13 @@ After that PMD threads on cores where RX queues was pinned will become ``core_id`` not in ``pmd-cpu-mask``), RX queue will not be polled by any PMD thread. +If pmd-rxq-affinity is not set for rxqs, they will be assigned to pmds (cores) +automatically. The processing cycles that have been stored for each rxq +will be used where known to assign rxqs to pmd based on a round robin of the +sorted rxqs. + +Rxq to pmds assignment takes place whenever there are configuration changes. + QoS --- |