Monitoring Processes With sar

Monitoring Processes With sar

The System Activity Reporter, sar, provides essentially the same information as osview, but it represents a ''snapshot'' of the system status, not a dynamic reflection. Because sar generates a single snapshot, it is easily saved and can be compared with a similar snapshot taken at another time. You can use sar automatically with cron to get a series of system snapshots over time to help you locate chronic system bottlenecks by establishing baselines of performance for your system at times of light and heavy loads, and under loads of various kinds (cpu load, network load, disk load, and so on). For complete information on sar, see the sar(1) reference pages. For more information on using sar to monitor system activity, see "Using timex(1), sar(1), and par(1)".