Master class  "Linux performance analysis and tuning"
Learn to interpret the output of tools like atop and to improve your system's performance!


January 18, 2015

Netatop version 0.5

November 25, 2014

Netatop version 0.4

September 6, 2014

Atop version 2.1

July 22, 2013

Netatop version 0.3

December 28, 2012

Netatop version 0.2

November 19, 2012

Atop version 2.0.2

November 12, 2012

Netatop version 0.1.1

October 26, 2012

Atop version 2.0

October 26, 2012

Netatop version 0.1

July 23, 2012

Atop version 1.27-3

November 18, 2010

Atop version 1.26-2

Atop is an ASCII full-screen performance monitor that is capable of reporting the activity of all processes (even if processes have finished during the interval), daily logging of system and process activity for long-term analysis, highlighting overloaded system resources by using colors, etc. At regular intervals, it shows system-level activity related to the CPU, memory, swap, disks (including LVM) and network layers, and for every process (and thread) it shows e.g. the CPU utilization, memory growth, disk utilization, priority, username, state, and exit code.
In combination with the optional kernel module netatop, it even shows network activity per process/thread.

The command atop has some major advantages compared to other performance monitoring tools: