Cisco AS5800 Specifications download pdf (Page 63)

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Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide

DOC-7810814=

Chapter 2 Commissioning

Task 1. Verifying Basic Setup

Verifying CPU Utilization

High utilization causes network performance problems. Knowing when the router is running at over 50%

utilization is critical because the router might start dropping packets if an unexpected traffic burst comes

through or if OSPF gets recalculated. Fast switching reduces CPU utilization.

5800# show processes cpu

CPU utilization for five seconds: 20%/6%; one minute: 31%; five minutes: 19%

PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process

1 144208 1526300 94 0.00% 0.00% 0.00% 0 Load Meter

2 118732 19749060 6 0.24% 0.12% 0.08% 0 OSPF Hello

3 42752544 2699659 15836 3.75% 0.87% 0.62% 0 Check heaps

4 7260 30062 241 0.00% 0.00% 0.00% 0 Pool Manager

5 0 2 0 0.00% 0.00% 0.00% 0 Timers

6 1472 494101 2 0.00% 0.00% 0.00% 0 Serial Background

7 49424 7631216 6 0.00% 0.00% 0.00% 0 EnvMon

8 0 1 0 0.00% 0.00% 0.00% 0 OIR Handler

9 13368616 3217631 4154 0.32% 0.57% 0.42% 0 ARP Input

10 18932 533419 35 0.00% 0.00% 0.00% 0 DDR Timers

11 116 4 29000 0.00% 0.00% 0.00% 0 Entity MIB API

Look at the top line of the output. If you see utilization at the top of the display over 50%, inspect the

columns 5Sec, 1Min, and 5Min. Find the process that uses the most CPU power. For an idle chassis,

numbers larger than two percent indicate a problem.

Table 2-4 describes the significant output fields in the previous example:

Whenever memory cannot be allocated to a process request (a memory leak), a console error message

appears:

Sep 14 11:30:33.339 EDT: %SYS-2-MALLOCFAIL: Memory allocation of 19960

bytes failed from 0x603D530C, pool Processor, alignment 0

-Process= "Exec", ipl= 0, pid= 48

-Traceback= 603D8610 603DAA70 603D5314 603D5AF0 60373054 60371474 603C33DC

603C3538 603C4378 60371934 603586B8 60358A10 6037C12C 6037C1E4 60372E9C

6037EDEC

To identify the problem, inspect the first few output lines of the show memory summary command and

show processor memory command.

Table 2-4 CPU Utilization Display Fields

Field Description

CPU utilization for five seconds:

2%/0%;

The first % number is the CPU utilization for the last 5.0

seconds. The second % number is the percentage of CPU

time spent at the packet-based interrupt level.

one minute: 1%;

CPU utilization for the last minute.

five minutes: 14%

CPU utilization for the last 5.0 minutes.

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 333 334

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Cisco AS5800 Specifications Page 63

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