[ovs-dev] [PATCH 0/5] mac-learning: Add additional counters for troubleshooting aid
jkbs at redhat.com
Tue Jun 26 07:38:05 UTC 2018
On Mon, 25 Jun 2018 12:57:08 +0200
Eelco Chaudron <echaudro at redhat.com> wrote:
> This series add some additional counters that make FDB debugging easier.
> The following counters now exists on a per mac_learning instance, and
> the last two have also been added as coverage counters.
> learned: Total number of learned MAC entries
> expired: Total number of expired MAC entries
> evicted: Total number of evicted MAC entries, i.e. entries moved
> out due to the table being full.
> moved : Total number of port moved MAC entries, i.e. entries
> where the MAC address moved to a different port.
> Take the example where you have an FDB table size configured which is
> to small.
> The effect of this is a high CPU utilization of the revalidator threads.
> The firs clue is the rev_mac_learning revalidator reason coverage counter.
> Than looking at the mac_learning_learned counter you know a lot of
> learning is going on but no reason why. The new mac_learning_evicted
> counter quickly shows it's related to entries being evicted.
> Currently you have to do this by taking muliple copies of the FDB table
> and compare them.
> Eelco Chaudron (5):
> mac-learning: Add additional mac-learning coverage counters
> mac-learning: Add per mac learning instance counters
> utilities: Update gdb script to include mac_learning counters
> ofproto: Add CLI commands to show and clear mac_learning statistics
> vswitchd: Document new fdb statistics commands
> lib/mac-learning.c | 23 +++++++++++++++
> lib/mac-learning.h | 7 +++++
> ofproto/ofproto-dpif.c | 67 ++++++++++++++++++++++++++++++++++++++++++++
> utilities/gdb/ovs_gdb.py | 4 +++
> vswitchd/ovs-vswitchd.8.in | 5 +++
> 5 files changed, 106 insertions(+)
For the series:
Acked-by: Jakub Sitnicki <jkbs at redhat.com>
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