Issue 387466 in chromium: "Predict network actions to improve page load performance" not playing nice with proxies

[chro...@googlecode.com]

Status: Unconfirmed
Owner: ----
Labels: Cr-Internals-Network Pri-2 Via-Wizard Type-Bug OS-Windows

New issue 387466 by bouvrett...@gmail.com: "Predict network actions to
improve page load performance" not playing nice with proxies
http://code.google.com/p/chromium/issues/detail?id=387466

UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML,
like Gecko) Chrome/35.0.1916.153 Safari/537.36

Example URL:
http://stackoverflow.com/questions/24351386/php-curl-file-get-contents-inconsistent-response-time-in-chrome-when-using-fiddl

Steps to reproduce the problem:
http://stackoverflow.com/questions/24351386/php-curl-file-get-contents-inconsistent-response-time-in-chrome-when-using-fiddl

What is the expected behavior?
http://stackoverflow.com/questions/24351386/php-curl-file-get-contents-inconsistent-response-time-in-chrome-when-using-fiddl

What went wrong?
It seems like this option is not playing nice when using a proxy. I suspect
it should be disabled by default when using a proxy.

More info here as well:

https://groups.google.com/forum/#!searchin/httpfiddler/chrome/httpfiddler/ysWhvTZ19Aw/2xdEo7qLkuAJ

Did this work before? N/A

Chrome version: 35.0.1916.153 Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 14.0 r0

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[chro...@googlecode.com]

Updates:
Labels: -Cr-Internals-Network-DataProxy Cr-Internals-Preload
Needs-Feedback Cr-Internals-Network-Proxy

Comment #3 on issue 387466 by davi...@chromium.org: "Predict network

actions to improve page load performance" not playing nice with proxies
http://code.google.com/p/chromium/issues/detail?id=387466

Could you capture a net-internals log while this is happening? Thanks!

http://dev.chromium.org/for-testers/providing-network-details

[chro...@googlecode.com]

Comment #4 on issue 387466 by bouvrett...@gmail.com: "Predict network

actions to improve page load performance" not playing nice with proxies
http://code.google.com/p/chromium/issues/detail?id=387466

Sure see attached. By the way it's super easy to reproduce - if you need
help let me know.

Attachments:
net-internals-log.json 63.1 KB

[chro...@googlecode.com]

Comment #7 on issue 387466 by bouvrett...@gmail.com: "Predict network

actions to improve page load performance" not playing nice with proxies
http://code.google.com/p/chromium/issues/detail?id=387466

Yeah sorry there is a lot of confusion with this issue. Actually when I
open Fiddler (my proxy) the issue stops.

This is a simple "vanilla" Apache web server and I did try to play with the
thread numbers without any luck.

So there are 3 elements here that are consistent:

1) I don't have this issue on any "normal" pages. What I mean by this, is
that I can only reproduce this issue on pages that will try to open a
second page (going through the Webserver)
2) If I open my proxy, the issue stops
3) If I remove the "Predict network actions to improve page load
performance" the issue stops.