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Old 4 Weeks Ago
proactiveaditya proactiveaditya is offline
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Determining load average over a period of time
How can i determine the load average of a centos server for the last 1 hour?
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jim mcnamara jim mcnamara is offline Forum Staff  
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One way:

Use sadc to gather stats for the day/hour/whatever - then analyze with sar against the sadc file.
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proactiveaditya proactiveaditya is offline
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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
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jim mcnamara jim mcnamara is offline Forum Staff  
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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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