Issue 157007 in chromium: Incognito Mode initially slow unless Internet Options "automatically detect settings" disabled

[chro...@googlecode.com]

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

New issue 157007 by ad...@wescook.ca: Incognito Mode initially slow unless
Internet Options "automatically detect settings" disabled
http://code.google.com/p/chromium/issues/detail?id=157007

UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML,
like Gecko) Chrome/22.0.1229.94 Safari/537.4

Steps to reproduce the problem:
1. On Windows, open Incognito mode
2. Assuming problem exists, first page load will be slow while "resolving
proxy"
3. Go into Internet Options > Connections > Lan Settings >
Disable "automatically detect settings"
4. Incognito mode can connect instantly again

What is the expected behavior?

What went wrong?
Initial page load is slower than expected. Possibly intended behavior, but
not ideal for end users.

Example URL:
Any

Did this work before? Yes Maybe a month ago? Not sure, but I don't remember
this delay previously.

Chrome version: 22.0.1229.94 Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)

[chro...@googlecode.com]

Updates:
Labels: -Internals-Network Internals-Network-Proxy

Comment #1 on issue 157007 by will...@chromium.org: Incognito Mode

initially slow unless Internet Options "automatically detect settings"
disabled
http://code.google.com/p/chromium/issues/detail?id=157007

Does this happen on the first time opening Chrome normally (not incognito)?
I don't know of any reason why they'd be different.

Incognito mode tries to keep all the internal data separate (including
networking configuration) so it re-runs all the network setup. That's why
the first page load needs to redo the "resolving proxy" step. But if you
don't see that delay for opening Chrome normally, then I'm confused what's
happening.

[chro...@googlecode.com]

Comment #2 on issue 157007 by ad...@wescook.ca: Incognito Mode initially

slow unless Internet Options "automatically detect settings" disabled
http://code.google.com/p/chromium/issues/detail?id=157007

Will, you're absolutely right. I guess I always keep a regular Chrome tab
up so I never noticed, but I often open Incognito when logging into
secondary Gmail accounts and the delay was much more obvious. My
apologies, I should have tested further.

Sounds like this is an understood issue though, and perhaps unrelated to
Chrome? I'd suggest a warning where if Chrome detects a slow resolving
proxy, it can offer a link to a help page with instructions on disabling
that setting. One of Chrome's best features is the instant start, so ten
second page loads sure hurts that.

Cheers.

[chro...@googlecode.com]

Comment #3 on issue 157007 by eglas...@gmail.com: Incognito Mode initially

slow unless Internet Options "automatically detect settings" disabled
http://code.google.com/p/chromium/issues/detail?id=157007

Note this delay also comes into play when you're using the 'Developer
tools'. So it could appear than the request for the main document takes
some seconds instead of milliseconds.

[chro...@googlecode.com]

Comment #5 on issue 157007 by benjamin...@gmail.com: Incognito Mode

initially slow unless Internet Options "automatically detect settings"
disabled
http://code.google.com/p/chromium/issues/detail?id=157007

This issue caused me a bunch of wasted time trying to figure out why my
site was so slow the first time I'd connect. I thought it was some issue
with my nginx/SSL config or something. I finally realized this was the
problem and that if I just visited any other page before visiting my site
then it would be fine.

Could Chrome do some of this initialization upon opening the incognito
window? Is there a reason it has to wait to do the initialization until the
user makes a request?

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