1093753 - first getUserMedia() call takes > 1s to show permissions dialog

Status: NEW

(Core :: WebRTC: Audio/Video, defect, P4)

Description

[Dan Mosedale (:dmosedale, :dmose)]

Standard8 first pointed this out in bug 1073410 comment 43.  If, using Nightly 36.0a1 (2014-11-04) on Yosemite (Mac OS X 10.10), I look at apprtc.appspot.com, the permissions prompt takes ~1.6s to fire on the first try, and is almost instantaneous on subsequent tries.  Chrome 38.0.2125.11 on the same machine is almost instantaneous on all posts of the prompt.

Using <http://mozilla.github.io/webrtc-landing/gum_test.html> on Nightly, it seems that audio-only and video-only each take about half as long as audio-video together.

This hurts the Firefox Hello link-clicker experience particularly, since presumably a large percentage of those calls will be one-offs for the link-clicker goes.

Logs forthcoming.

Comment 1

[Dan Mosedale (:dmosedale, :dmose)]

Attachment: Log with two dialog displays, first fast, second slow

NSPR_LOG_MODULES=mediamanager:5,getusermedia:5,timestamp was used to generate this

Comment 2

[Florian Quèze [:florian]]

The problem seems similar to what was reported in bug 970413.

Comment 3

[Bulk Bug Changes for mreavy's org]

Mass change P3->P4 to align with new Mozilla triage process.