Hi all,

Has anyone else had any problems with their web browsing lately? I did
an aptitude update and aptitude upgrade on the 18th of January and the
following packages were upgraded:
[UPGRADE] libdps1 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libice6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libsm6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libx11-6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxaw7 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxext6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxi6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxmu6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxmuu1 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxp6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxpm4 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxrandr2 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxt6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxtrap6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxtst6 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] libxv1 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] xfonts-cyrillic 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] xlibmesa-gl 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] xlibmesa-glu 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] xlibs-data 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3
[UPGRADE] xutils 4.3.0.dfsg.1-14sarge2 -> 4.3.0.dfsg.1-14sarge3

I'm running stable with some stuff off backports.org, like Firefox and
Thunderbird.

I can't pin down exactly what caused the problem, I've installed karm
and flashplayer-nonfree lately too, I've removed flashplayer and that
hasn't fixed the problem.

Now some web pages download really slowly - including www.debian.org!
The behavior goes something like this: I browse to that address and
Firefox (or Mozilla or Evolution, they all behave the same way for a
given web site, hence I suspect a library problem) contacts the server,
and starts transferring data, and displays the page incrementally in
teeny-tiny bits, about one graphic per second and up to 10 (wow, 10!)
words a second. Slowly, slowly the web page will be displayed
(rendered?) and eventually I'll get the page.

Does anyone have any ideas or suggestions that I can try to fix this? Am
I on the right track?

Thanks,
--
Greg Vickers
IT Security Engineer & Project Manager
IT Security, Network Services,
Information Technology Services
Queensland University of Technology
L12, 126 Margaret St, Brisbane

Phone: +61 7 3138 9536
Mobile: 0410 434 734
Fax: +61 7 3138 2921
Email: g.vickers@qut.edu.au
IT Security web site: http://www.its.qut.edu.au/itsecurity/

CRICOS No. 00213J


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On Tue, Jan 23, 2007 at 01:37:23PM +1000, Greg Vickers wrote:
>
...
>
> I'm running stable with some stuff off backports.org, like Firefox and
> Thunderbird.
>
> I can't pin down exactly what caused the problem, I've installed karm
> and flashplayer-nonfree lately too, I've removed flashplayer and that
> hasn't fixed the problem.
>
> Now some web pages download really slowly - including www.debian.org!
> The behavior goes something like this: I browse to that address and
> Firefox (or Mozilla or Evolution, they all behave the same way for a
> given web site, hence I suspect a library problem) contacts the server,
> and starts transferring data, and displays the page incrementally in
> teeny-tiny bits, about one graphic per second and up to 10 (wow, 10!)
> words a second. Slowly, slowly the web page will be displayed
> (rendered?) and eventually I'll get the page.

what results do you get using wget for the same sites?

A

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Hi Andrew,

Andrew Sackville-West wrote:
> On Tue, Jan 23, 2007 at 01:37:23PM +1000, Greg Vickers wrote:
> ...
>> I'm running stable with some stuff off backports.org, like Firefox and
>> Thunderbird.
>>
>> I can't pin down exactly what caused the problem, I've installed karm
>> and flashplayer-nonfree lately too, I've removed flashplayer and that
>> hasn't fixed the problem.
>>
>> Now some web pages download really slowly - including www.debian.org!
>> The behavior goes something like this: I browse to that address and
>> Firefox (or Mozilla or Evolution, they all behave the same way for a
>> given web site, hence I suspect a library problem) contacts the server,
>> and starts transferring data, and displays the page incrementally in
>> teeny-tiny bits, about one graphic per second and up to 10 (wow, 10!)
>> words a second. Slowly, slowly the web page will be displayed
>> (rendered?) and eventually I'll get the page.
>
> what results do you get using wget for the same sites?

Now that is weird - wget www.debian.org downloads the site at about
300B/s (yes, bytes per second) Am I missing something?

But if I start my VM and load XP debian.org comes down in about 2
seconds still.

--
Greg Vickers
IT Security Engineer & Project Manager
IT Security, Network Services,
Information Technology Services
Queensland University of Technology
L12, 126 Margaret St, Brisbane

Phone: +61 7 3138 9536
Mobile: 0410 434 734
Fax: +61 7 3138 2921
Email: g.vickers@qut.edu.au
IT Security web site: http://www.its.qut.edu.au/itsecurity/

CRICOS No. 00213J


--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
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On Thu, Jan 25, 2007 at 08:52:06AM +1000, Greg Vickers wrote:
> Hi Andrew,
>
> Andrew Sackville-West wrote:
> > On Tue, Jan 23, 2007 at 01:37:23PM +1000, Greg Vickers wrote:
> > ...
> >> I'm running stable with some stuff off backports.org, like Firefox and
> >> Thunderbird.
> >>
> >> I can't pin down exactly what caused the problem, I've installed karm
> >> and flashplayer-nonfree lately too, I've removed flashplayer and that
> >> hasn't fixed the problem.
> >>
> >> Now some web pages download really slowly - including www.debian.org!
> >> The behavior goes something like this: I browse to that address and
> >> Firefox (or Mozilla or Evolution, they all behave the same way for a
> >> given web site, hence I suspect a library problem) contacts the server,
> >> and starts transferring data, and displays the page incrementally in
> >> teeny-tiny bits, about one graphic per second and up to 10 (wow, 10!)
> >> words a second. Slowly, slowly the web page will be displayed
> >> (rendered?) and eventually I'll get the page.
> >
> > what results do you get using wget for the same sites?
>
> Now that is weird - wget www.debian.org downloads the site at about
> 300B/s (yes, bytes per second) Am I missing something?
>
> But if I start my VM and load XP debian.org comes down in about 2
> seconds still.

so xp in a vm on your debian box can download faster than the debian
that's wrapped around it? That's just crazy. not a clue, sorry.

A

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Andrew Sackville-West wrote:
> > But if I start my VM and load XP debian.org comes down in about 2
> > seconds still.
>
> so xp in a vm on your debian box can download faster than the debian
> that's wrapped around it? That's just crazy. not a clue, sorry.

Hmm, if you put it like that, it must be a problem at a network layer
that the VM with windows implements on its own. Like TCP.

Wild guess, but perhaps this will fix it:

echo 0 > /proc/sys/net/ipv4/tcp_window_scaling

--
see shy jo

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Hi Joey,

Joey Hess wrote:
> Andrew Sackville-West wrote:
>>> But if I start my VM and load XP debian.org comes down in about 2
>>> seconds still.
>> so xp in a vm on your debian box can download faster than the debian
>> that's wrapped around it? That's just crazy. not a clue, sorry.
>
> Hmm, if you put it like that, it must be a problem at a network layer
> that the VM with windows implements on its own. Like TCP.
>
> Wild guess, but perhaps this will fix it:
>
> echo 0 > /proc/sys/net/ipv4/tcp_window_scaling

Fixed! Thank you Joey! After talking to some other Linux users here, I
was pointed to this article: http://lwn.net/Articles/92727/#Comments,
"TCP window scaling and broken routers"

You can fine-tune the fix for individual destination IPs, this method is
detailed at the bottom of the above page.

--
Greg Vickers
IT Security Engineer & Project Manager
IT Security, Network Services,
Information Technology Services
Queensland University of Technology
L12, 126 Margaret St, Brisbane

Phone: +61 7 3138 9536
Mobile: 0410 434 734
Fax: +61 7 3138 2921
Email: g.vickers@qut.edu.au
IT Security web site: http://www.its.qut.edu.au/itsecurity/

CRICOS No. 00213J


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