Troubleshooting guide

13 — Monthly maintenance tasks
13-4 Alcatel-Lucent 5620 Service Aware Manager
5620 SAM
System Administrator Guide
Look for differences in the output of the data for similar loads on each
station. Such differences indicate performance degradation.
iv Press CTRL-C to stop the command.
5 Use the mpstat command to review the activities performed by the CPU.
i Enter the following:
# mpstat time ↵
where time is the interval, in seconds, between CPU polls; a value between 10 and 60 is
recommended
ii Review the command output. Code 13-2 is an example of Solaris mpstat
output; Table 13-2 describes each output field.
Code 13-2: Solaris mpstat output example
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 5 0 0 258 55 87 1 0 0 0 196 5 15 0 80
Table 13-2 Solaris mpstat field descriptions
iii Record the data for future base measure comparisons of station
performance.
Heading Description (events per second unless noted)
CPU Processor identification
minf Minor faults
mjf Major faults
xcal Interprocessor cross-calls
intr Interrupts
ithr Interrupts as threads (not counting clock interrupts)
csw Context switches
icsw Involuntary context switches
migr Thread migrations to another processor
smtx Spins on mutexes (lock not acquired on first try)
srw Spins on readers/writer locks (lock not acquired on first try)
syscl System calls
usr Percent user time
sys Percent system time
wt Percent wait time
idl Percent idle time
Release 12.0 R6 | November 2014 | 3HE 08861 AAAF TQZZA Edition 01