1232752 - mozilla.okta.com hangs on load

Status: RESOLVED WORKSFORME

(Core :: General, defect)

Description

[u279076]

Attachment: profile.json.zip

I noticed that when loading mozilla.okta.com my Nightly hangs for several seconds on load. If I reload the page it still hangs but for less time, probably due to caching. I'm attaching a copy of a profile I captured in the debugger.

Comment 1

[Boris Zbarsky [:bzbarsky]]

The profile, if I believe it, shows tons of time spent in a few places:

1)  IPDL::PCookieService::SendGetCookieString (claimed to be called from page JS directly, but presumably via document.cookie?).  This is 10540 samples over 11 seconds, 25% of execution time.

2)  IPDL::PContent::SendRpcMessage, claimed to be called from JS directly from ContentPolicyChild.shouldLoad.  Again, around 11k samples, 25% of execution time.

3)  14k self samples in Startup::XRE_InitChildProcess.  This looks like a total lie to me...

Comment 2

[Boris Zbarsky [:bzbarsky]]

Also, I can't reproduce the hang.

Anthony, are you still seeing this?  If so, are you seeing it in a clean profile?

Comment 3

[u279076]

I can't seem to reproduce this anymore. When I was seeing it I had the EFF's Privacy Badger addon enabled and worked around the issue by disabling the add-on. However I cannot reproduce this in a new profile with Privacy Badger enabled nor can I reproduce this anymore in my daily profile with Privacy Badger enabled.

Comment 4

[Boris Zbarsky [:bzbarsky]]

OK.  Please reopen if this comes back....