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openvswitch: collect mega flow mask stats

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Collect mega flow mask stats. ovs-dpctl show command can be used to
display them for debugging and performance tuning.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Andy Zhou
2013-10-22 10:42:46 -07:00
committed by Jesse Gross
parent 618ed0c805
commit 1bd7116f1c
5 changed files with 67 additions and 12 deletions
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4
net/openvswitch/datapath.h
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@@ -46,11 +46,15 @@
* @n_lost: Number of received packets that had no matching flow in the flow
* table that could not be sent to userspace (normally due to an overflow in
* one of the datapath's queues).
* @n_mask_hit: Number of masks looked up for flow match.
* @n_mask_hit / (@n_hit + @n_missed) will be the average masks looked
* up per packet.
*/
struct dp_stats_percpu {
u64 n_hit;
u64 n_missed;
u64 n_lost;
u64 n_mask_hit;
struct u64_stats_sync sync;
};