"From the collected data, you get lots of information about your server:
"CPU utilization
Memory paging and its utilization
Network I/O, and transfer statistics
Process creation activity
All block devices activity
Interrupts/sec etc.
"sar output can be used for identifying server bottlenecks. However, analyzing information provided by sar can be difficult, so use kSar, which can take sar output and plot a nice easy to understand graph over period of time."
