Dstat: Versatile resource statistics tool
BSEditor: Dstat gives you detailed selective information in columns and clearly indicates in what magnitude and unit the output is displayed. Less confusion, less mistakes.

Dstat is unique in letting you aggregate block device throughput for a certain diskset or networkset, ie. you can see the throughput for all the block devices that make up a single filesystem or storage system.

You can write your own dstat plugins to monitor whatever you like in just a few minutes based on provided examples and a Little bit of Python knowledge.

Dstats output by Default is designed for being interpreted by humans in real-time, however the new CSV output allows you to store CSV output in detail to a file to be imported later into Gnumeric or Excel to generate graphs.
Features

* Combines vmstat, iostat, ifstat, NetStat information and more
* Shows stats in exactly the same timeframe
* Enable/order counters as they make most sense during analysis/troubleshooting
* Modular design
* Written in python so easily extendable for the task at hand
* Easy to extend, add your own counters (please contribute those)
* Includes many external plugins to show how easy it is to add counters
* Can summarize grouped block/network devices and give total numbers
* Can show interrupts per device
* Very accurate timeframes, no timeshifts when system is stressed
* Shows exact units and limits conversion mistakes
* Indicate different units with different colors
* Show intermediate results when delay > 1
* Allows to export CSV output, which can be imported in Gnumeric and Excel to make graphs you can free download Dstat 0.7.0 now.