Determining load average over a period of time


 
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# 1  
Determining load average over a period of time

How can i determine the load average of a centos server for the last 1 hour?
# 2  
One way:

Use sadc to gather stats for the day/hour/whatever - then analyze with sar against the sadc file.
# 3  
I am not at all familiar with sadc or sar. Can you explain a bit on how to accomplish the job using sadc and sar?

Thanks in advance
# 4  
sadc is a system data collector - sa1 is a shell script wrapper.
A crontab entry like this:
Code:
 0 * * * 0-6 /path/to/sa1
 20,40 8-17 * * 1-5 /path/to/sa1

collects data on the hour and then at 20 & 40 minutes after the hour during business hours 8:00am to 5:00pm

The sa1 output file is stored where your man page says it lives = the file name output by sa1 is usually
sa[nn]
where nn is the day of the month.

Some systems have other implementations of sadc - read your man page.
 

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