Portal Monitoring has "showRequestDataSample" enabled by default. This causes some data to be written as a comment in HTML markup.
As users aren't aware of this, it decreases performance as there are more markup that isn't actually used. If a page has many portlets, this markup can have a noticeable size.
Steps to reproduce:
- Enter any Liferay page
Expected behavior: no data sample is written in the HTML markup
Actual behavior: data sample is written in the bottom of generated HTML markup (see screenshot)