Using Shell Commands When A System Is Busy - Mitel MiVoice Business 3300 ICP Troubleshooting Manual

Diagnosing Problems
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Using Shell Commands when a system is busy

10.2.1 Using Shell Commands when a system is busy
MONITORING SYSTEM PERFORMANCE
On the Linux shell, enter the following performance commands. To exit the utility, press
<CTRL-C>.
TDSTAT - SYSTEM RESOURCE STATISTICS
The following dstat command gives a summary the system resources.
root@mxeiii:~# dstat -tcdnD total 60
The output is shown below. The utility updates the last line with the average usage for
the current minute. After a minute, a new line is created.
• System time - The time of the 60 second sample.
total-cpu-usage - The idl column is the percentage of time the CPU was idle. A
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system that is idle will have an CPU idle value around 90.
• dsk/total - The per second average amount of bytes read/written from/to the disk. An
idle system on an average has 0 byte read and 14k bytes written.
• net/total - The per second average of bytes received/sent on the network interface.
TOP - DISPLAY PROCESS STATS
The top command shows the top CPU usage of the processes that are running on the
system.
A process contains one or many tasks.
To start the top utility, on the Linux shell, enter top. An example output of the top
command for an MXe-III system is shown below.
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