Troubleshooting guide

13 — Monthly maintenance tasks
Alcatel-Lucent 5620 Service Aware Manager 13-3
5620 SAM
System Administrator Guide
The top 5620 SAM process listed under the CPU column should be the Java
process. However, the Java process should not consume the majority of CPU
cycles compared to previous base measures. Some database processes may
also take CPU time, depending on the system load.
iii Record the data for future base measure comparison of station performance.
iv Press CTRL-C to stop the command.
3 If the station OS is Solaris, go to step 5.
4 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 13-1 is an example of RHEL mpstat
output; Table 13-1 describes each output field.
Code 13-1: RHEL mpstat output example
CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
all 0.25 0.00 0.17 0.00 0.00 0.00 0.00 0.00 99.58
Table 13-1 RHEL mpstat field descriptions
iii Record the data for future base measure comparisons of station
performance.
Heading Description (events per second unless noted)
CPU Processor number; the keyword all indicates that statistics are calculated
as averages among all processors
%usr Percentage of CPU utilization at the user application level
%nice Percentage of CPU utilization at the user level with nice priority
%sys Percentage of CPU utilization at the system level; does not include time
spent servicing hardware and software interrupts
%iowait Percentage of CPU idle time during which the system had an outstanding
disk I/O request
%irq Percentage of CPU time spent servicing hardware interrupts
%soft Percentage of CPU time spent servicing software interrupts
%steal Percentage of time spent in involuntary wait by the virtual CPU or CPUs
during hypervisor servicing of another virtual processor
%guest Percentage of CPU time spent running a virtual processor
%idle Percentage of CPU idle time without an outstanding disk I/O request
Release 12.0 R6 | November 2014 | 3HE 08861 AAAF TQZZA Edition 01