A new pane has been added[1] to the debug toolbar which visualizes[2]
Profiler output.
This visualization takes all the discrete events recorded by
wfProfileIn/Out, groups them by splitting titles on : and -, and draws a
series of timelines of these events. This was created with the intention
of helping developers to understand what the application is doing at
various points in time. Using this visualization its reasonably easy to
scroll down to the timeline marked 'query' and see at what point in the
request each query was issued, and what other events were triggered near
that time.
Erik B.
[1]
https://gerrit.wikimedia.org/r/#/c/104318/
[2]
http://i.imgur.com/i5tefrs.png
