420883 - Javascript slow on last builds

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[Gabriele Best [:Gabri]]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.9b4) Gecko/2008030317 Firefox/3.0b4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.9b4) Gecko/2008030317 Firefox/3.0b4

On the last nightly builds and on the firefox 3 beta4 rc1 build, javascript is more slow than previuos nightly builds.

On sunspider test it makes 9500ms (on the previous builds 7000-6500ms)
On this celtickane.com/webdesign/jsspeed2007.php test it makes 1000ms (before 650ms).

I hope you'll fix it soon.

Reproducible: Always

Comment 1

[Steve England [:stevee]]

It's getting faster and faster by my measurements.

Please make some tests using a new profile each time, with no other apps runing in the background, with the default RSS bookmark removed, with the anti-phishing and anti-malware lists disabled and the update checks (browser/extensions/search engines) disabled, with a reboot between each test.

And then provide links to your sunspider results here, so we may compare them.

The tinderbox javascript tests show no such regression fwiw.

http://graphs.mozilla.org/graph.html#spst=range&spstart=1203018608&spend=1204647963&bpst=Cursor&bpstart=1203018608&bpend=1204647963&m1tid=151880&m1bl=0&m1avg=0

Comment 2

[Mauricio Collares [:collares]]

All XP tinderboxes reported that sunspider ran *faster* starting March 3rd, not slower (<http://graphs.mozilla.org/graph.html#spst=range&spstart=1202319080&spend=1204642770&bpst=Cursor&bpstart=1202319080&bpend=1204642770&m1tid=134735&m1bl=0&m1avg=0&m2tid=134821&m2bl=0&m2avg=0&m3tid=134783&m3bl=0&m3avg=0&m4tid=146304&m4bl=0&m4avg=0>). 

Is there any special information about your setup that may help the developers figure out what's causing this on your machine?

Comment 3

[Gabriele Best [:Gabri]]

Wow! You're right! With a new profile firefox go a lot faster!
Sunspider ran at 5996.4ms!

Good!