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show pxf cpu
only once, but some types of packets can require more than one pass through these columns, and
each additional pass through the PXF processor is referred to as feedback. This counter represents
the amount of traffic that cannot be processed in an optimal manner.
new_work—Incremented for new packets that come into the PXF pipeline. This counter represents
•
a snapshot of the amount of incoming traffic being processed by the processor.
null—Incremented for every context during which the PXF pipe is not processing traffic. This
•
counter represents the processor's potential to handle additional traffic. As the processor becomes
more busy, the value for null decreases until it becomes 0, at which point the processor has reached
its maximum usage.
Table 4-8
Table 4-8
Field
FP context statistics
feed_back
new_work
null
FP average context/sec
feed_back
new_work
null
FP context utilization
Actual
Theoretical
Maximum
Cisco Broadband Cable Command Reference Guide
4-68
describes the fields shown in the show pxf cpu context command:
Field Descriptions for the show pxf cpu context Command
Description
Displays the current value for the feed_back counter and the rate that the
counter is increasing per second (the difference between the current value
and the previous value divided by the time period between the two).
Displays the current value for the new_work counter and the rate that the
counter is increasing per second (the difference between the current value
and the previous value divided by the time period between the two).
Displays the current value for the null counter and the rate that the counter
is increasing per second (the difference between the current value and the
previous value divided by the time period between the two).
Displays the rate, in terms of the number of contexts per second (cps) for the
feed_back counter for the last 1-minute, 5-minute, and 60-minute time
periods.
Displays the rate, in terms of the number of contexts per second (cps) for the
new_work counter for the last 1-minute, 5-minute, and 60-minute time
periods.
Displays the rate, in terms of the number of contexts per second (cps) for the
null counter for the last 1-minute, 5-minute, and 60-minute time periods.
Displays the actual percentage of processor usage per second, compared to
the theoretical maximum, for the last 1-minute, 5-minute, and 60-minute
time periods. The value for Actual =
(new_work+feed_back)*100/(new_work+feed_back+null).
Displays the percentage of processor usage compared to the ideal theoretical
capacities for the last 1-minute, 5-minute, and 60-minute time periods. The
value for Theoretical = (new_work+feed_back)*100/3125000. (The
theoretical maximum for the PXF processors is 3,125,000 contexts per
second.)
Displays the actual maximum percentage of processor usage that has
occurred for the last 1-minute, 5-minute, and 60-minute time periods. The
value for Actual = (new_work+feed_back+null)*100/3125000.
Chapter 4
Commands for the Cisco uBR10012 Router
OL-1581-08
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