770463 - Firefox first page load adds proxy Redirect to Navigation Timing

Status: UNCONFIRMED

(Core :: Networking: Proxy, defect, P3)

Description

[peter.de.keer]

Attachment: firefox load time.PNG

User Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.47 Safari/536.11

Steps to reproduce:

New session of Firefox Aurora.
Start up any page.


Actual results:

Redirect time gets added to navigation timing.

This can be viewed with the 'laodtime breakdown' bookmarklet:
http://kaaes.github.com/timing/


Expected results:

Redirect time should not get added to navigation timing

Comment 1

[peter.de.keer]

Happens every time when you restart firefox browser.

Comment 2

[peter.de.keer]

Please close all other programs (MS Outlook prevents this bug to show?!)

Comment 3

[u279076]

Can you try to reproduce with the latest Nightly (nightly.mozilla.org)? I cannot reproduce this locally.

Comment 4

[peter.de.keer]

OK, I got it! Change your network connection settings to 'auto detect'.
First time firefox loads up a page, its seeks the network. This gets added to the page load time, which is incorrect. I believe...

I surely hope you can reproduce this!

Comment 5

[u279076]

(In reply to peter.de.keer from comment #4)
> OK, I got it! Change your network connection settings to 'auto detect'.

I need more instruction on this direction.

Comment 6

[peter.de.keer]

I mean changing the value of this form:
http://support.mozilla.org/en-US/kb/settings-network-updates-and-encryption?s=network+settings&r=0&e=un&as=s#w_connection-settings-dialog

Change your settings in "Connection Settings Dialog".
* "no proxy" (if it works on your network) is the fastest, so might not see the redirect.
* "Auto-detect proxy settings for this network" is the slowest for me, so the 'redirect' is the most obvious.
* "Use system proxy settings" gives the 'redirect' also.

Just to make sure FireFox does nothing else then loading your page, start it with the command "firefox http://www.mozilla.org/robots.txt". Then check the bookmarklet for 'redirect' time.

Peter

Comment 7

[Boris Zbarsky [:bzbarsky]]

It's not clear that this is incorrect.  Proxy autodetect does in fact take time, and I don't see why we shouldn't be counting it...

Now perhaps we shouldn't count it as "redirect" time, but internally it's implemented as a redirect.

Comment 8

[peter.de.keer]

If follow you in your argument.
The only thing I can come up with to make you guys fix it is:
THE OTHER BROWSERS ARE NOT COUNTING IT

I have Google Analytics statistics where firefox is 5second average load time.
Other browsers come in at 1.5seconds. Just because they don't add the networking setup time to my page load time.

The way it is today I see bad page load time but I cannot improve it because, I can't see the difference between redirects I can control and this browser bug ;-)

So please fix it.

Comment 9

[Firefox Bug Husbandry Bot]

Bulk change to priority: https://bugzilla.mozilla.org/show_bug.cgi?id=1399258

Comment 10

[Firefox Bug Husbandry Bot]

Bulk change to priority: https://bugzilla.mozilla.org/show_bug.cgi?id=1399258

Comment 11

[BMO Automation]

Moving bug to Core/Networking: Proxy.