Ubuntu comes with a system monitoring utility of its own and it is pretty good too. From showing things like the CPU/RAM usage, currently running software processes, Disk Usage & network bandwidth monitoring… it’s quite useful without a doubt.
In fact I use it all the time. But if you’re looking for something a bit simple than that yet loads fast and lets you easily deal with troublesome applications (in addition to system monitoring of course) then Watsup is pretty decent utility.
*. By default it’s a small looking “panel” window and once you double click on it you’ll be reveled for the full system monitor window. If you right click on it, then it’ll exit.
*. It monitors your CPU usage, RAM, Network usage (although not really calculating … just showing second by second basis data usage), temperatures of your Hardware (mine wasn’t supported), hard disk drive activity (read/write outputs), page faults etc.
*. You can run it using the Root privileges for additional control.
*. But my favorite feature is that it lets you “kll” running apps really easy. This may not be the best implementation for some because as soon as you click on a software process on its list, it’ll ask you whether you wanna terminate it or not. It’s that easy!.
*. Change font sizes and update intervals.
You can install watsup system monitor in Ubuntu 10.04, 10.10, 11.04 Natty Narwhal and 11.10 Oneiric Ocelot by first downloading the “.deb” file from here (32bit) and here (64bit). And then simply double click on the file and follow the onscreen instructions laid out by the Ubuntu Software Center.
And one thing though. I don’t know whether this is a feature or a bug (due to the Ayatana Scrollbars ?) but by default Watsup shows running apps that only fit your current window size. And if you keep stretching the height it’ll keep expanding the app list, but it would’ve been really nice if we could just scroll and see them anyway.
But as said before this is not a replacement for the default system monitor in Ubuntu but for a lightweight system monitor that lets you kill running processes easily, I’d vote for it!.