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Full Discussion: Determening load average.
Top Forums Shell Programming and Scripting Determening load average. Post 302116187 by sysgate on Wednesday 2nd of May 2007 08:54:02 AM
Old 05-02-2007
You can get load average by "uptime" command, output will be :
Quote:
15:42:32 up 18 days, 21:18, 0 users, load average: 1.26, 1.21, 1.06
These numbers : "1.26, 1.21, 1.06" are the load average of the last 1, 5, 15 minutes.
and the logic would be something like :
Code:
#!/bin/bash

load=`uptime|awk '{print $12}'
if [ $load -gt 10 ]; then 
   echo Stopping httpd server due to high system load.... >> /path/to/apache-logs
/etc/init.d/httpd stop
fi

but this will depend very much on your system config files and OS.
 
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uptime(1)							   User Commands							 uptime(1)

NAME
uptime - show how long the system has been up SYNOPSIS
uptime DESCRIPTION
The uptime command prints the current time, the length of time the system has been up, and the average number of jobs in the run queue over the last 1, 5 and 15 minutes. It is, essentially, the first line of a w(1) command. EXAMPLES
Below is an example of the output uptime provides: example% uptime 10:47am up 27 day(s), 50 mins, 1 user, load average: 0.18, 0.26, 0.20 ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
w(1), who(1), whodo(1M), attributes(5) NOTES
who -b gives the time the system was last booted. SunOS 5.10 18 Mar 1994 uptime(1)

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