how to enable bootchart for TX2

I have apt-get bootchart for tx2, but when execute bootchart, it report below error. Can you help me how to enable bootchart for tx2?

$ bootchart 

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 bootchart

We never tried bootchart before. External link has some trouble shooting for you.

If you are using rel-28(jetpack3.x) based release, the login manager we are using is lightdm.