562785 - Cal_* tests in the Zimbra test suite slower in Firefox than in Google Chrome

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Johnny Stenback (:jst)]

The Cal_* tests in the Zimbra performance test suite (testing interaction with the Zimbra Calendar app) are all on the order of twice as fast in Google Chrome compared to Firefox. The work in bug bug 494117 does help on some tests in the Zimbra performance test suite, but it doesn't seem to really move the needle on the Cal_* tests, so we need to investigate further here.

Unfortunately the Zimbra perfomance test suite is not public, but if you're inside the Mozilla firewall I can get you access to it...

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

One problem is that there is some recursion in js_Invoke/js_Interpret/js_fun_apply/js_fun_call and that doesn't seem to trace too well.

Bug 561491 has similar, though perhaps not the same problem;

Comment 2

[Boris Zbarsky [:bzbarsky]]

Attachment: Slightly prettified plaintext output

What I did to the original shark profile:

1)  Flattened libmozjs.
2)  Charged system libs to callers.
3)  Charged a bunch of appshell event handling stuff to callers.
4)  Charged various cocoa widgety bits to callers.
5)  Charged jit-generatd code to callers
6)  Flattened out event dispatch
7)  Removed or charged various stuff in the <= 0.1% range to clean things up.

Comment 3

[Boris Zbarsky [:bzbarsky]]

The fix for bug 494117 helped here.

Comment 4

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven’t been updated in more than 3 years and has no one currently assigned to P5.

If you have questions, please contact :mdaly.