Comparing the Top, Htop, Atop, and Glances system monitors
The Top system monitor is a useful aid for identifying system bottlenecks, and Htop, Atop, and Glances extend its possibilities.
The Top utility has served as a general-purpose system monitor on Linux systems for many years. Top originally appeared as part of the procps package . Debian, Fedora, and openSUSE forked the original package and released procps-ng version 3.3.0  at the end of 2011. The new Top impresses with many new fields, simpler operation, and better performance. Resourceful developers have also devised alternatives to the Top utility, including Htop , Atop , and most recently the Python program Glances  (see Table 1 for a comparison of features).
Htop delights users with a rollable process list, simple operation via function keys, and ASCII bar graphs for CPU utilization. Atop records the CPU, memory, disk, and network utilization, and colors highlight resources that are working at full capacity. Atop also records performance data and supports analysis with reporting functions or even interactive post-processing.
The newcomer Glances displays as much information as possible on a terminal with 80 characters and 24 rows. Glances also offers the ability to monitor remote systems by running in server mode over the network. Color highlights illuminate resource bottlenecks.
Buy this article as PDF
New partnership will bring more and better CS training to US schools
Criminals offer online help over Tor network
Sophisticated malware is still present on Joomla and WordPress sites around the world.
Future versions of Ubuntu's code service will support the popular Git version control system used with Linux and other open source projects.
New release marks the arrival of AMD’s unified driver strategy.
A new study by IDC charts big changes in the big hardware market.
Azure CTO says Redmond has already considered the unthinkable.
Lead developer quells rumors that the Debian version is slated for center stage.
MSBuild is now just another GitHub project as Redmond continues its path to the light.
Malware could pass data and commands between disconnected computers without leaving a trace on the network.