LatencyTOP
Table of Contents
Overview
LatencyTOP is a tool that lets you identify where in the system latency is happening, and what kind of operation/action is causing the latency to happen.
Example uses in Ubuntu1
Preliminary check
LatencyTOP needs a kernel that was built with
CONFIG_HAVE_LATENCYTOP_SUPPORT=y and CONFIG_LATENCYTOP=y which is the
case for the standard newer Ubuntu kernels.
# grep -i latencytop /boot/config-`uname -r` CONFIG_HAVE_LATENCYTOP_SUPPORT=y CONFIG_LATENCYTOP=y
Installing LatencyTOP
sudo apt-get install latencytop
Usage
sudo latencytop
