Useful SAR Commands

Memory related statistics:

Syntax: sar –r TimeInterval NoOfTimes

Example: sar -r 2 4

 

CPU related statistics:

Syntax: sar –u ALL TimeInterval NoOfTimes

Example: sar -u 2 2

 

I/O related statistics:

Syntax: sar –b TimeInterval NoOfTimes

Example: sar -b 1 4

 

DISK related statistics:

Syntax: sar –d TimeInterval NoOfTimes

Example: sar -d 2 2

 

Save the statistics into a File:

Syntax: sar -o FileName –u ALL TimeInterval NoOfTimes

Example:

1.       sar -o cpuSarfile -u 2 2

2.       sar -o memorySarfile -r 2 4

3.       …

It creates the file in home directory.

 

Fetching the statistics from a SAR File:

Syntax: sar –f FileName

Example: sar -f memorySarfile