image Analyzing past System performance of a Linux server
Case
Today’s date is 17th Dec 2012.
You are asked to check the System performance of a Linux server on 7th Dec,2012 between 1 AM to 5 AM.

# To check CPU utilization
# sar -u -f /var/log/sa/sa07 -s 01:00:01 -e 05:00:01

… # To check Memory status
#sar -r -f /var/log/sa/sa07 -s 01:00:01 -e 05:00:01

# To check Load average
#sar -q -f /var/log/sa/sa07 -s 01:00:01 -e 05:00:01

# To check Network status
#sar -n DEV -f /var/log/sa/sa07 -s 01:00:01 -e 05:00:01

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