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Monitor Linux System Load and Processes With atop
atop In Action
July 23, 2009
atop is a useful tool that displays system load information alongside process information in a similar style to top.
As in the screenshot below illustrates, the top window shows system-level information and the bottom one process information.
The lines in the top window show:
All of these use color to indicate if there are any problems.
The bottom window shows active processes (use 'a' to toggle showing all processes). 'g' shows the default process information, or use 'm' to show memory information. VGROW and RGROW on the memory information screen show the increase in virtual and memory usage during the polling interval; check the man page for further information about other columns. Note that you can also kill a process from here by hitting 'k'.
There are various other top-alike programs out there for other resources. Try iftop, for example, to take a look at your network interface statistics! Or htop to get top information in colour and with scrolling.
Article courtesy of Serverwatch