I already installed pybootchartgui and boot chart in Ubuntu 16.04. After running
sudo pybootchartgui
or
sudo bootchart
this is the result:
No path given, trying /var/log/bootchart.tgz
warning: path '/var/log/bootchart.tgz' does not exist, ignoring.
Parse error: empty state: '/var/log/bootchart.tgz' does not contain a valid bootchar
There is a duplicate question here. It is is very old and the answers provided doesn't work.