March 15, 2014

Produce and Deliver Reports on System Utilization (Processor, Memory, Disk, and Network).

Processor

System Activity Reporter, SAR. To display 5 samples with 2 seconds apart.

-u      Report  CPU  utilization.

Memory

vmstat - Report virtual memory statistics. To display 5 samples with 2 seconds apart.

Disk

Report file system disk space usage.

-h, --human-readable    Print sizes in human readable format (e.g., 1K 234M 2G)

Statistics for input/output statistics for devices, partitions and network filesystems (NFS). To display 5 samples with 2 seconds apart.

-d     Display the device utilization report.
-N     Display the registered device mapper names for any device mapper devices.  
       Useful for viewing LVM2 statistics.
-k     Display statistics in kilobytes per second instead of blocks per second.  
       Data displayed are valid only with kernels 2.4 and later.

network

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