Closed Bug 811460 Opened 10 years ago Closed 9 years ago

Performance regression on ie.microsoft.com/testdrive/performance/mandelbrotexplorer

Categories

(Core :: JavaScript Engine, defect)

10 Branch
x86
All
defect
Not set
normal

Tracking

()

RESOLVED WORKSFORME
mozilla23

People

(Reporter: alice0775, Unassigned)

References

(Blocks 1 open bug, )

Details

(Whiteboard: [ietestdrive])

Build Identifier:
http://hg.mozilla.org/mozilla-central/rev/1b0226622e94
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/19.0 Firefox/19.0 ID:20121113030658

Nightly19.0a1 is 70% slow than Firefox9.
(Nightly19.0a1/Firefox9 = 3.75/2.21 = 170%)

Steps to reproduce:
1. Open URL

Actual results
 Firefox9 ------ Fine detail: 51,777,896 iterations in 2.21 seconds
 Firefox10 ----- Fine detail: 51,777,896 iterations in 5.74 seconds
 Firefox11 ----- Fine detail: 51,777,896 iterations in 5.61 seconds
 Firefox12 ----- Fine detail: 51,777,896 iterations in 3.96 seconds
 Firefox13 ----- Fine detail: 51,777,896 iterations in 3.96 seconds
 Firefox14 ----- Fine detail: 51,777,896 iterations in 3.57 seconds
 Firefox15 ----- Fine detail: 51,777,896 iterations in 3.75 seconds
 Firefox16 ----- Fine detail: 51,777,896 iterations in 3.64 seconds
 Firefox17beta-- Fine detail: 51,777,896 iterations in 3.84 seconds
 Aurora18.0a2 -- Fine detail: 51,777,896 iterations in 4.38 seconds
 Nightly19.0a1 - Fine detail: 51,777,896 iterations in 3.75 seconds
triggered by:
dda97b0f3e05	Brian Hackett — Disable jstracer by default, bug 693815. r=dmandelin

So,maybe  WONTFIX ....
Assignee: nobody → general
Blocks: 693815
Component: General → JavaScript Engine
Status: NEW → RESOLVED
Closed: 10 years ago
Resolution: --- → WONTFIX
Why would this be WONTFIX? A regression is a regression. It's still worth figuring out if it can be made faster in the JM+Ion world.
Status: RESOLVED → REOPENED
Resolution: WONTFIX → ---
Yeah, the real question is why Ion is not managing to do this fast.
Whiteboard: [ietestdrive]
This performance regression was fixed in Firefox 23:

Firefox 9 -- Fine detail: 51,777,896 iterations in 0.98 seconds
Firefox 10 - Fine detail: 51,777,896 iterations in 3.26 seconds
...
Firefox 19 - Fine detail: 51,777,896 iterations in 3.75 seconds

Firefox 20 - Fine detail: 51,777,896 iterations in 1.38 seconds
Firefox 21 - Fine detail: 51,777,896 iterations in 1.33 seconds
Firefox 22 - Fine detail: 51,777,896 iterations in 1.37 seconds

Firefox 23 - Fine detail: 51,777,896 iterations in 0.85 seconds
Firefox 24 - Fine detail: 51,777,896 iterations in 0.84 seconds
Firefox 25 - Fine detail: 51,777,896 iterations in 0.81 seconds
Firefox 26 - Fine detail: 51,777,896 iterations in 0.80 seconds
Status: REOPENED → RESOLVED
Closed: 10 years ago9 years ago
OS: Windows 7 → All
Resolution: --- → WORKSFORME
Target Milestone: --- → mozilla23
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