When using multiple PMDs and numerous ports, a performance gain
may be achieved in some use cases by pinning a PMD/port to a
particular (set of) core(s).
This patch provides a summary of the switch's port/core affinities
each time that the status of the switch's ports is modified.
Based on this information, a user may determine what affinity
modifications are required to optimise performance for their
particular use case.
Signed-off-by: Mark Kavanagh <mark.b.kavan...@intel.com>
Signed-off-by: Wojciech Andralojc <wojciechx.andral...@intel.com>
---
lib/dpif-netdev.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c
index 7df9523..17a6c08 100644
--- a/lib/dpif-netdev.c
+++ b/lib/dpif-netdev.c
@@ -2664,6 +2664,11 @@ reload:
emc_cache_init(&pmd->flow_cache);
poll_cnt = pmd_load_queues(pmd, &poll_list, poll_cnt);
+ /* List port/core affinity */
+ for (i = 0; i < poll_cnt; i++) {
+ VLOG_INFO("Core %d processing port \'%s\'\n", pmd->core_id,
netdev_get_name(poll_list[i].port->netdev));
+ }
+
/* Signal here to make sure the pmd finishes
* reloading the updated configuration. */
dp_netdev_pmd_reload_done(pmd);
--
1.9.3
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