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| author | Kevin Traynor <ktraynor@redhat.com> | 2021-03-18 11:34:04 +0000 |
|---|---|---|
| committer | Ilya Maximets <i.maximets@ovn.org> | 2021-03-22 12:28:49 +0100 |
| commit | ec68a877db5bbfba49ddeb9929479c033420ea6b (patch) | |
| tree | bc3a8b88019cf96dee397c8fe11d970a08619de1 /Documentation | |
| parent | edcfd7176f8b46b18d3501377f7a2c7ac4d72908 (diff) | |
| download | openvswitch-ec68a877db5bbfba49ddeb9929479c033420ea6b.tar.gz | |
dpif-netdev: Allow PMD auto load balance with cross-numa.
Previously auto load balance did not trigger a reassignment when
there was any cross-numa polling as an rxq could be polled from a
different numa after reassign and it could impact estimates.
In the case where there is only one numa with pmds available, the
same numa will always poll before and after reassignment, so estimates
are valid. Allow PMD auto load balance to trigger a reassignment in
this case.
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Acked-by: David Marchand <david.marchand@redhat.com>
Tested-by: Sunil Pai G <sunil.pai.g@intel.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/topics/dpdk/pmd.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/topics/dpdk/pmd.rst b/Documentation/topics/dpdk/pmd.rst index caa7d97be..e481e7941 100644 --- a/Documentation/topics/dpdk/pmd.rst +++ b/Documentation/topics/dpdk/pmd.rst @@ -239,7 +239,9 @@ If not set, the default variance improvement threshold is 25%. PMD Auto Load Balancing doesn't currently work if queues are assigned cross NUMA as actual processing load could get worse after assignment - as compared to what dry run predicts. + as compared to what dry run predicts. The only exception is when all + PMD threads are running on cores from a single NUMA node. In this case + Auto Load Balancing is still possible. The minimum time between 2 consecutive PMD auto load balancing iterations can also be configured by:: |