[OSX-Users] Re: Time-outs with Chrome on OS X 10.8.2 at ECS (Building 32)

[Michael Jewell]

Aha! I think I may have just had this very same issue (while demoing a
site, in fact), but on the eduroam wlan. I was also using Chrome on a
MacBook Pro, and was trying to get to my internal server (tina.ecs).

Cheers,
Mike

On Thu, Nov 22, 2012 at 3:25 PM, Tim Chown <tjc at ecs.soton.ac.uk> wrote:

> Well, I'd observe that those google and facebook sites have public IPv6
> addresses advertised, and the UG lab has IPv6 to the workstations.
>
> BUt the recent Chrome builds should try both IPv4 and IPv6 and use
> whatever works first, indeed OSX is quite reactive to find the right
> protocol to use.
>
> Try an inconfig and netstat to dump host interface and routing
> information. Try a tcpdump to see what traffic is, or isn't, flowing.
>
> Tim
>
> On 22 Nov 2012, at 14:51, electronic Max <emax at ecs.soton.ac.uk> wrote:
>
> >
> > Hello,
> >
> > I am experiencing the worst, most frustrating kind of Heisenbug that is
> difficult to debug - I can't tell if it's a problem with Chrome, OS X, or
> even my hardware, but was wondering if any of you might have any insight or
> ideas I can try -- it's driving me crazy!
> >
> > What happens is that web pages often take a very long time to load at
> labs, pausing at the "Waiting for <host>" and eventually timing out.  Some
> 10% of my total page loads time out completely (ERR_TIMED_OUT) - others
> just take more than 15s to connect (which feels like an eternity)  THis
> seems to happen sporadically, worse at certain times of the day (like right
> now- peak lab times) and better early in the morning or late at night.  I
> noticed that the sites that I access and time out most often are :
> Google.com, Google.co.uk, Gmail.com and Facebook.com although these just
> happen to also be the sites that I test-access most often.
> >
> > Now, the real mystery is : I ONLY witness this behaviour at labs
> (building 32 ethernet).   It's very pronounced because the network here is
> so fast, so when something just spontaneously fails to load it's very
> noticeable.   This problem does _not_ happen at all when tethering over 3G
> or at home via DSL - at all, as far as I can tell.
> >
> > I cleared caches, created new profiles, tried different Chrome versions,
> to no avail.  I checked my Ethernet settings, frame size, DNS servers (I'm
> trying Google's DNS servers right now, 8.8.8.8 and 8.8.4.4) with no
> difference. I've removed all my Chrome extensions, tried launching chrome
> with built-in Flash disabled, cache disabled, still to no avail - and
> reverted all about:flags to default. Right now all of the above are
> disabled and it's still happening.
> >
> > I noticed that the sites I'm connecting to are nearly all SSL - could it
> be SSL related?
> >
> > I tried connecting through VPN and it seemed to improve things at first,
> but I can now confirm it still does the problem
> >
> > Cursory testing with Safari or Firefox do not exhibit the same symptoms,
> although I could merely not be using Safari or Firefox enough to run into
> the problems.  Chrome is my main browser, and I really need this to quit
> acting so annoyingly.
> >
> > If you have any thoughts pls do let me know
> >
> > thanks,
> > Max
> >
> >
>
> --
> Dr Michael O. Jewell
> ECS, University of Southampton
>
>
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