mtstat dev

Dstat is a versatile replacement for vmstat, iostat, netstat and ifstat. Dstat overcomes some of their limitations and adds some extra features, more counters and flexibility. Dstat is handy for monitoring systems during performance tuning tests, benchmarks or troubleshooting.

Dstat allows you to view all of your system resources instantly, you can eg. compare disk usage in combination with interrupts from your IDE controller, or compare the network bandwidth numbers directly with the disk throughput (in the same interval).

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.

Dstat’s 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.

Since it’s practically impossible to test dstat on every possible permutation of kernel , python or distribution version, I need your help and your feedback to fix the remaining problems.

If you have improvements or bugreports, please send them to:

<dag@wieers.com>