SAR:(System Activity Reporter) SAR is a legacy system monitoring tool which is used to report CPU activity, system loads average, memory/paging, LUN load, network activity.We can add SAR in crontab to monitor the server through out the day and this will help you to find the system disk I/O,memory utilization,CPU utilization any given time.Once you have the sar output files, you can use ksar graphical […]