What does Activity Cron Plugin do?

[newjie]

I can't find documentation of this plugin on the website.

[Llewellynvdm]

This plugin, and this component is currently unmaintained

You should instead make use of the new API directly instead.

The plugins original purpose was to show, track the number of queries made to the old API. This old API is now depreciated, and we will in fact release a completely new component in the near future. So please do not use these components any more, they are depreciated.