Alcatel-Lucent 7950 Quality Of Service Manual page 162

Queue Depth Monitoring
The queue depth can then be shown as follows:
*A:PE-1# show service id 1 sap 1/2/1 queue-depth
===============================================================================
Queue Depth Information (Ingress SAP)
===============================================================================
No Matching Entries
===============================================================================
===============================================================================
Queue Depth Information (Egress SAP)
===============================================================================
-------------------------------------------------------------------------------
Name
MBS
-------------------------------------------------------------------------------
Queue Depths (percentage)
-------------------------------------------------------------------------------
0%-10% 11%-20% 21%-30% 31%-40% 41%-50% 51%-60% 61%-70% 71%-80% 81%-90% 91%-100%
-------------------------------------------------------------------------------
68.21
-------------------------------------------------------------------------------
Average Elapsed Time
Wghtd Avg Polling Interval: 99 ms
-------------------------------------------------------------------------------
===============================================================================
*A:PE-1#
The output shows the percentage of polls for each 10% range of queue depth. The output includes
the name of the queue, its MBS configuration, the average elapsed time over which the depth was
monitored (this is the elapsed time since the start of monitoring or the last clear), and the weighted
average polling interval.
For example, in the above output, the queue depth was in the range of 51% to 60% for 3.22 percent
of the polls, the polling was performed over an elapsed time of 11 minutes and 48 seconds, and the
average polling interval was 99ms.
The monitoring is performed on the hardware queues corresponding to the configured queue. It is
possible that the set of related hardware queues for a given configured queue changes over time.
For example, when LAG ports are added or removed resulting in monitored hardware queues
being added or removed. If the set of hardware queues for the configured queue changes, the
system will only report occupancy information of all currently instantiated hardware queues,
specifically, no attempt is made to keep historical occupancy information. The average polling
interval is weighted based on the elapsed monitoring time of the individual hardware queues
corresponding to the configured queue, and the elapsed monitoring time is averaged over the same
set of hardware queues.
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7950 XRS Quality of Service Guide
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