[TriLUG] MS Web Host drops connecions from Linux clients

Brian Phelps brphelps at ieee.org
Tue Nov 3 15:56:39 EST 2009


On Tue, Nov 3, 2009 at 1:55 PM, Michael Kimsal <mgkimsal at gmail.com> wrote:

> Poked my brother about this (up in Detroit - slow up there too).  His
> random
> notes include:
>
> http://support.microsoft.com/kb/932170
> http://forums.whirlpool.net.au/forum-replies-archive.cfm/720119.html
> one of the last comments: "Just wanted to give a status update for those
> that might be interested.
>
> We are dealing directly with Microsoft regarding this issue and it has been
> escalated quite high in the support team.
>
> We have managed to duplicate the issue with Linux as well so the problem is
> not just related to Mac OS X. It also relates to any TCP transfer and not
> just with SMB.
>
> Looking very much like a bug with Vista and hopefully in time there will be
> a hotfix for it."
> http://en.wikipedia.org/wiki/Compound_TCP
>
> CTCP is enabled by default in computers running beta versions of Windows
> Server 2008 and disabled by default in computers running Windows Vista.
> CTCP
> can be enabled with the command: netsh interface tcp set global
> congestionprovider=ctcp   or disabled with the command: netsh interface tcp
> set global congestionprovider=none
>
> looks like there are a lot of known problems with vista/2008 and TCP
>
> even pingdom says it takes 3.3 sec to load a 3.8 kb file and 0.6 seconds to
> transfer a 3.6 kb file
>
> it's def something wrong with the server and other windows clients ignore
> the lost packets and keep resending new ones instead of waiting for
> retransmission
>
>
Thanks for this useful info.  I am sening this to the site admin now!

> On Tue, Nov 3, 2009 at 1:03 PM, Brian Phelps <brphelps at ieee.org> wrote:
>
> > On Tue, Nov 3, 2009 at 12:58 PM, Glenn Hennessee
> > <glenn.hennessee at gmail.com>wrote:
> >
> > > I just did that and the page loads much quicker with javascript turned
> > off
> > > but there are no menus which means they are entirely javascript. It may
> a
> > > case of bad javascript which causes the slow loading with linux.
> > > glenn
> >
> > Its not a javascript issue.  I promise that is just an illusion. It has
> > nothing to do with user-agent or flash either.  Read my earlier posts
> >
> > >
> > >
> > >
> > > Barry Gaskins wrote:
> > >
> > >>   Another possible explaination is that the javascript on the page is
> > >> failing.  There is a ton of javascript on this site and it does a lot
> > >> of stuff intended to figure out what browser / OS you are using and it
> > >> does different stuff depending on what it thinks it found.  Maybe it
> > >> does not recognize the Linux system and tries to do something stupid
> > >> that takes a long time to fail?
> > >>
> > >>   Has anyone tried loading the page on a Linux system with javascript
> > >> turned off?
> > >>
> > >>
> > >>
> > >> On Tue, Nov 3, 2009 at 12:08 PM, Glenn Hennessee
> > >> <glenn.hennessee at gmail.com> wrote:
> > >>
> > >>
> > >>> I'm not sure that's the problem. I used the User Agent Switcher addin
> > for
> > >>> FF
> > >>> to say I was IE 6 under win xp and it was still very slow to load.
> > >>> glenn
> > >>>
> > >>> Christopher L Merrill wrote:
> > >>>
> > >>>
> > >>>> Lee Fickenscher wrote:
> > >>>>
> > >>>>
> > >>>>> Could it be due to all the asp on their site?
> > >>>>>
> > >>>>>
> > >>>> It is certainly not a problem that is inherent to ASP. Most likely,
> > >>>> something
> > >>>> is looking at the User-Agent HTTP header and puking when it sees
> > Linux.
> > >>>> It could be at the firewall, the web server, or deep in their
> > >>>> application.
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>> --
> > >>> Glenn Hennessee
> > >>> Department of Chemistry
> > >>> NC State University
> > >>> Raleigh, NC 27606
> > >>> Voice: (919) 515-2947 FAX: (919) 515-8909
> > >>> Email: Glenn_Hennessee at ncsu.edu
> > >>> --
> > >>> TriLUG mailing list        :
> > >>> http://www.trilug.org/mailman/listinfo/trilug
> > >>> TriLUG FAQ  : http://www.trilug.org/wiki/Frequently_Asked_Questions
> > >>>
> > >>>
> > >>>
> > >> --
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> > >>
> > >>
> > >
> > > --
> > > Glenn Hennessee
> > > Department of Chemistry
> > > NC State University
> > > Raleigh, NC 27606
> > > Voice: (919) 515-2947 FAX: (919) 515-8909
> > > Email: Glenn_Hennessee at ncsu.edu
> > > --
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>
>
>
> --
> Michael Kimsal
> http://jsmag.com - for javascript developers
> http://groovymag.com - for groovy developers
> 919.827.4724
> --
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