999992 - [netmonitor] bogus load times for resource types in pie chart analysis of loading page with/without cache (huge numbers compare to real time)

Status: NEW

(DevTools :: Netmonitor, defect)

Description

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Firefox Nightly 20140422030204 on Windows 8.1

In the Netmonitor tool, profiling page load with and without cache shows some bogus times for resource types.

Example url: http://www.heise.de/
Steps to reproduce:
1. Clear cache (Preferences > Advanced > Network)
2. Open the Network Analyzer from the Developer Tools
3. Load http://www.heise.de/
4. Launch cache analysis by clicking on the summary with number of requests, data transferred and time elapsed at the bottom.
Actual result:
Get 40-170s for loading the images without cache (sometimes even with cache), real load time is <10s.

If that is a sum, replace it with the time the browser has to wait the last item of that resource type to finish loading (measuring from the moment the site request has been fired).

Comment 1

[James Willcox (:snorp) ([e-mail]) (he/him)]

I see this too against Fennec.