956413 - Network requests waiting, taking 5 seconds with profile

Status: RESOLVED DUPLICATE of bug 1136484

(Core :: Networking, defect)

Description

[Benoit Girard (:BenWa)]

Attachment: Network Monitor

I'm seeing 1-5 seconds network requests in the waiting phase. This seems to be worse on sites I visit a lot and only happens on my primary profile. Using another browser or profile and the sites are snappy to load. I haven't tweaked any non GFX preferences and the time is spent waiting on network (CPU is idle, profiling shows nothing, tabs shows Connecting...).

Comment 1

[Benoit Girard (:BenWa)]

Attachment: about:support for affect profile

Comment 2

[Wayne Mery (:wsmwk)]

regression in nightly?

Comment 3

[Benoit Girard (:BenWa)]

Nope. I did a regression window but I kept running into the edge of was doesn't run on my machine (likely doesn't run on 10.9):
2010-09-22 (doesn't run)
2010-10-20 (slow request to sites like reddit.com on my profile)

Comment 4

[Benoit Girard (:BenWa)]

I reset my profile and this is still happening.

Can anyone try to reproduce this with their existing profile and compare with either a clean profile or Chrome?

Comment 5

[Patrick McManus [:mcmanus]]

I regularly see about 1500ms of latency with reddit - the home page is just slow (chrome confirms). But you're seeing triple that. hmm.

maybe a wireshark capture to see if we're really seeing that much network delay or its being captured at a higher level?

Comment 6

[Benoit Girard (:BenWa)]

Sure. What commands should I run?

Comment 7

[Patrick McManus [:mcmanus]]

http://wiki.wireshark.org/CaptureSetup

basically install wireshark, hit ^E to start the capture, load reddit, and hit ^E to stop the capture. the cap probably has cookies and junk in it - so you can just get a screeenshot of the summary that should show the timing information. If it looks like examining the capture file itself would be handy I'll let you know.

Comment 8

[Benoit Girard (:BenWa)]

Attachment: dump loaded with slow profile

Comment 9

[Benoit Girard (:BenWa)]

Attachment: dump loaded with clean profile

Comment 10

[Vladan Djeric (:vladan)]

I can reproduce this. While on reddit.com, I hit enter on the reddit.com URL in the URL bar and the Network analysis devtool always shows at least 1 second being spent waiting on the GET request for reddit.com/ 

- I can reliably reproduce this on Nightly 32
- It does not reproduce on Release 29.0.1
- It does not reproduce in Chrome 35
- It does not reproduce on a fresh profile. I think it might have to be a site frequently visited in the past?

Comment 11

[Patrick McManus [:mcmanus]]

I'm going to bet this is a dup of 1136484

Comment 12

[Patrick McManus [:mcmanus]]

best guess of a dup.. please reopen with fresh info if you still see this as a concern