There are many types and causes of latency. LatencyTOP focuses on the type of latency that causes skips in audio, stutters in your desktop experience or that overloads your server (while you have plenty of CPU power left).
LatencyTOP focuses on the cases where the applications want to run and execute useful code, but there's some resource that's not currently available (and the kernel then blocks the process). This is done both on a system level and on a per process level, so that you can see what's happening to the system, and which process is suffering and/or causing the delays
Note:- LatencyTOP needs a kernel that was built with the following two options and by defauly ubuntu intrepid kernel comes with this
Install LatencyTOP in Ubuntu
sudo apt-get install latencytop
This will complete the installation.
If you want to run latencytop use the following command from your terminal
Once it opens you should see similar to the following screen
One more screenshot
If you want more information about latencytop use the folowing command from your terminal