Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.os.linux.networking > #729 > unrolled thread

Slow loading web pages

Back to article view | Back to comp.os.linux.networking

Contents

  Slow loading web pages blues2use <blues2use@nospam_gmail.com> - 2011-10-29 15:29 +0000
    Re: Slow loading web pages J G Miller <miller@yoyo.ORG> - 2011-10-29 16:06 +0000
      Re: Slow loading web pages Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2011-10-29 18:10 +0200
        Re: Slow loading web pages J G Miller <miller@yoyo.ORG> - 2011-10-29 16:22 +0000
          Re: Slow loading web pages Bit Twister <BitTwister@mouse-potato.com> - 2011-10-29 16:51 +0000
            Re: Slow loading web pages blues2use <blues2use@nospam_gmail.com> - 2011-10-29 23:38 +0000
        Re: Slow loading web pages blues2use <blues2use@nospam_gmail.com> - 2011-10-29 19:06 +0000
          Re: Slow loading web pages Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2011-10-30 00:31 +0200
            Re: Slow loading web pages Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-30 05:35 +0000
    Re: Slow loading web pages Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2011-10-29 18:08 +0200
    Re: Slow loading web pages blues2use <blues2use@nospam_gmail.com> - 2011-10-30 02:06 +0000
      Re: Slow loading web pages Bit Twister <BitTwister@mouse-potato.com> - 2011-10-30 02:48 +0000
    Re: Slow loading web pages blues2use <blues2use@nospam_gmail.com> - 2011-10-30 16:08 +0000
      Re: Slow loading web pages J G Miller <miller@yoyo.ORG> - 2011-10-30 17:31 +0000
        Re: Slow loading web pages bluse2use <blues2use@nospam_gmail.com> - 2011-10-30 21:30 +0000
        Re: Slow loading web pages David Brown <david@westcontrol.removethisbit.com> - 2011-10-31 08:52 +0100
          Re: Slow loading web pages Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-31 08:44 +0000
            Re: Slow loading web pages bluse2use <blues2use@nospam_gmail.com> - 2011-10-31 14:47 +0000
              Re: Slow loading web pages Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-10-31 15:23 +0000
                Re: Slow loading web pages bluse2use <blues2use@nospam_gmail.com> - 2011-10-31 17:27 +0000
          Re: Slow loading web pages bluse2use <blues2use@nospam_gmail.com> - 2011-10-31 14:45 +0000
            Re: Slow loading web pages Oscar Tiderman <oscar.tiderman@gmail.com> - 2011-11-02 02:48 -0700
              Re: Slow loading web pages bluse2use <blues2use@nospam_gmail.com> - 2011-11-02 14:37 +0000
                Re: Slow loading web pages Jeff Long <long@[127.0.0.1]> - 2011-11-03 09:13 -0500
                  Re: Slow loading web pages bluse2use <blues2use@nospam_gmail.com> - 2011-11-03 23:09 +0000

Page 1 of 2  [1] 2  Next page →

#729 — Slow loading web pages

I have recently started using high-speed Comcast cable modem @ 15MBPS. I 
am having a problem with web pages loading slowly in Mint. I am running a 
dual boot Mint/Win7 desktop pc hardwired to the router. The pages load 
nearly instantaneously in Win7 (Firefox or Chrome) but lag considerably 
in Mint. I have noticed that when I navigate to a web page I see the 
"Looking up whateversite.com" in the lower left corner and "sending 
request" followed by "waiting for whateversite.com" in Firefox and Chrome 
until the page actually loads. I have checked the DNS settings in Win7 
and Mint and they are the same. Thunderbird and Pan speeds are unaffected.

At this point, I'm looking for suggestions to check for what might be 
causing this lag or how to correct it. BTW, this desktop pc is connected 
via ethernet cable to my router. The wireless laptops being served by the 
router (running dual boot XP/Mint) load pages extremely quickly as well 
in either operating system. Therefore, it seems that there is something 
wrong in my network settings on this particular Win7/Mint desktop pc 
configuration.

Ethernet info - Ethernet controller: Broadcom Corporation NetXtreme 
BCM5755 Gigabit Ethernet PCI Express (rev 02)

Router - Linksys WRT54G

Suggestions for what to check will be most appreciated.

Thanks in advance..

[toc] | [next] | [standalone]

#730

On Saturday, October 29th, 2011 at 15:29:15h +0000, Blues2Use asked:

> Suggestions for what to check will be most appreciated.

Use nslookup and/or dig to see how long name lookups take.

From what I recall, there used to be an issue with Firefox
and IPv6.

From what I vaguely recall, if IPv6 was enabled on the system,
lookups were made using IPv6 first, then when that eventually
timed out, the lookup was then correctly made using IPv4.

Check the Firefox configuration for

     network.dns.disableIPv6

and see if setting it to boolean true makes any difference.

[toc] | [prev] | [next] | [standalone]

#732

J G Miller a écrit :
> 
> From what I recall, there used to be an issue with Firefox
> and IPv6.
> 
> From what I vaguely recall, if IPv6 was enabled on the system,
> lookups were made using IPv6 first, then when that eventually
> timed out, the lookup was then correctly made using IPv4.

What you describe is not an issue with firefox nor IPv6 but with broken
DNS servers or relays.

[toc] | [prev] | [next] | [standalone]

#733

le samedi, 29 octobre, 2011 á 18:10:32h +0200, Pascal Hambourg a écrit:
 
> What you describe is not an issue with firefox nor IPv6 but with broken
> DNS servers or relays.

So what should one do if those broken DNS servers or relays are outside
of one's administrative control and the people responsible for them
refuse to fix them?

[toc] | [prev] | [next] | [standalone]

#734

On Sat, 29 Oct 2011 16:22:30 +0000 (UTC), J G Miller wrote:
>
> So what should one do if those broken DNS servers or relays are outside
> of one's administrative control and the people responsible for them
> refuse to fix them?

Change DNS server values, or run your own caching server.  :)

[toc] | [prev] | [next] | [standalone]

#737

On Sat, 29 Oct 2011 16:51:58 +0000, Bit Twister wrote:

> On Sat, 29 Oct 2011 16:22:30 +0000 (UTC), J G Miller wrote:
>>
>> So what should one do if those broken DNS servers or relays are outside
>> of one's administrative control and the people responsible for them
>> refuse to fix them?
> 
> Change DNS server values, or run your own caching server.  :)

Currently running caching DNS server with about the same results in lag 
speed...just spent another hour in tech chat with Comcast...it appears to 
be a physical problem possibly in my outside connections at the 
box...we'll find out Monday afternoon...

Thanks

[toc] | [prev] | [next] | [standalone]

#735

On Sat, 29 Oct 2011 18:10:32 +0200, Pascal Hambourg wrote:

> J G Miller a écrit :
>> 
>> From what I recall, there used to be an issue with Firefox and IPv6.
>> 
>> From what I vaguely recall, if IPv6 was enabled on the system, lookups
>> were made using IPv6 first, then when that eventually timed out, the
>> lookup was then correctly made using IPv4.
> 
> What you describe is not an issue with firefox nor IPv6 but with broken
> DNS servers or relays.

My cable modem uses fixed DNS via Comcast. Regardless of what I use in my 
router, it has to pass through those DNS servers. I'm thinking I should 
call Comcast to find out what the DNS delay problems are. 

This problem started just about a week ago but it hasn't gotten any 
worse; just never got any better.

Thanks for the suggestion.

[toc] | [prev] | [next] | [standalone]

#736

blues2use a écrit :
> On Sat, 29 Oct 2011 18:10:32 +0200, Pascal Hambourg wrote:
> 
>> J G Miller a écrit :
>>> From what I recall, there used to be an issue with Firefox and IPv6.
>>>
>>> From what I vaguely recall, if IPv6 was enabled on the system, lookups
>>> were made using IPv6 first, then when that eventually timed out, the
>>> lookup was then correctly made using IPv4.
>> What you describe is not an issue with firefox nor IPv6 but with broken
>> DNS servers or relays.
> 
> My cable modem uses fixed DNS via Comcast. Regardless of what I use in my 
> router, it has to pass through those DNS servers.

Why ? Does Comcast prohibit communication with any other DNS ?

> I'm thinking I should 
> call Comcast to find out what the DNS delay problems are. 

IMO you should first check whether your issue is actually a DNS problem,
with proper DNS tools as already suggested. A web browser alone is not
enough to investigate network problems.

[toc] | [prev] | [next] | [standalone]

#740

On Sat, 2011-10-29, Pascal Hambourg wrote:
> blues2use a écrit :
>> On Sat, 29 Oct 2011 18:10:32 +0200, Pascal Hambourg wrote:
>> 
>>> J G Miller a écrit :
>>>> From what I recall, there used to be an issue with Firefox and IPv6.
>>>>
>>>> From what I vaguely recall, if IPv6 was enabled on the system, lookups
>>>> were made using IPv6 first, then when that eventually timed out, the
>>>> lookup was then correctly made using IPv4.
>>> What you describe is not an issue with firefox nor IPv6 but with broken
>>> DNS servers or relays.
>> 
>> My cable modem uses fixed DNS via Comcast. Regardless of what I use in my 
>> router, it has to pass through those DNS servers.
>
> Why ? Does Comcast prohibit communication with any other DNS ?
>
>> I'm thinking I should 
>> call Comcast to find out what the DNS delay problems are. 
>
> IMO you should first check whether your issue is actually a DNS problem,
> with proper DNS tools as already suggested. A web browser alone is not
> enough to investigate network problems.

No, but remember that he said some browsers (in Linux) showed the
delay, and others didn't. (It seems to me he forgets that half of the
time, too.)

I too suspect some IPv6-related problem, but I can't remember which
ones exist or how you prove that's what you see.  Possibly it's
triggered by an exact combination of bugs/settings in the browser,
bugs/settings in the resolver, the DNS and your IPv6 setup.

/Jorgen

-- 
  // Jorgen Grahn <grahn@  Oo  o.   .     .
\X/     snipabacken.se>   O  o   .

[toc] | [prev] | [next] | [standalone]

#731

Hello,

blues2use a écrit :
> I have recently started using high-speed Comcast cable modem @ 15MBPS. I 
> am having a problem with web pages loading slowly in Mint. I am running a 
> dual boot Mint/Win7 desktop pc hardwired to the router. The pages load 
> nearly instantaneously in Win7 (Firefox or Chrome) but lag considerably 
> in Mint. I have noticed that when I navigate to a web page I see the 
> "Looking up whateversite.com" in the lower left corner and "sending 
> request" followed by "waiting for whateversite.com" in Firefox and Chrome 
> until the page actually loads. I have checked the DNS settings in Win7 
> and Mint and they are the same. Thunderbird and Pan speeds are unaffected.

What about (long enough) file download using HTTP or FTP ?

> At this point, I'm looking for suggestions to check for what might be 
> causing this lag or how to correct it.

A packet capture of the traffic generated when requesting a page might help.

[toc] | [prev] | [next] | [standalone]

#738

On Sat, 29 Oct 2011 15:29:15 +0000, blues2use wrote:

> I have recently started using high-speed Comcast cable modem @ 15MBPS. I
> am having a problem with web pages loading slowly in Mint. I am running
> a dual boot Mint/Win7 desktop pc hardwired to the router. The pages load
> nearly instantaneously in Win7 (Firefox or Chrome) but lag considerably
> in Mint. I have noticed that when I navigate to a web page I see the
> "Looking up whateversite.com" in the lower left corner and "sending
> request" followed by "waiting for whateversite.com" in Firefox and
> Chrome until the page actually loads. I have checked the DNS settings in
> Win7 and Mint and they are the same. Thunderbird and Pan speeds are
> unaffected.
> 
> At this point, I'm looking for suggestions to check for what might be
> causing this lag or how to correct it. BTW, this desktop pc is connected
> via ethernet cable to my router. The wireless laptops being served by
> the router (running dual boot XP/Mint) load pages extremely quickly as
> well in either operating system. Therefore, it seems that there is
> something wrong in my network settings on this particular Win7/Mint
> desktop pc configuration.
> 
> Ethernet info - Ethernet controller: Broadcom Corporation NetXtreme
> BCM5755 Gigabit Ethernet PCI Express (rev 02)
> 
> Router - Linksys WRT54G
> 
> Suggestions for what to check will be most appreciated.
> 
> Thanks in advance..

Further investigations show: my Mint dual boot Win7 loads web pages 
extremely quickly in Firefox and Chrome as would be expected with a 15mbps 
connection. I am still experiencing a lag from 6 to as much as 15 seconds 
before a web page fully displays in Firefox and Chrome in my Mint 
installation; as previously mentioned, I am running a locally caching DNS 
without any improvement in the lag. Also, I'm not so sure that there is, 
in fact, a physical connection problem but that there is a system setting 
or settings problem in Mint. i just don't know what to check to see where 
the bottleneck may be so that I can make the necessary corrections.

Thanks

[toc] | [prev] | [next] | [standalone]

#739

On 30 Oct 2011 02:06:05 GMT, blues2use wrote:

> Further investigations show: my Mint dual boot Win7 loads web pages 
> extremely quickly in Firefox and Chrome as would be expected with a 15mbps 
> connection. I am still experiencing a lag from 6 to as much as 15 seconds 
> before a web page fully displays in Firefox and Chrome in my Mint 

You can change DNS servers to rule out a dns server. Easy to do,

$ cat /etc/resolv.conf
nameserver 127.0.0.1


Using the OpenDns server

$ cat /etc/resolv.conf
nameserver 208.67.222.222
nameserver 127.0.0.1

Run your test.

Order of DNS resolution might be improved via nsswitch.conf

My change
$ dif /etc/nsswitch.conf /etc/nsswitch.conf_vorig | grep hosts
< hosts:        files dns
> hosts:         mdns4_minimal files nis dns wins mdns4 

To improve Firefox speed, my $HOME/.mozilla/firefox/*.default/user.js has

user_pref("browser.download.manager.scanWhenDone", false);
user_pref("browser.safebrowsing.enabled", false);
user_pref("browser.safebrowsing.malware.enabled", false);
user_pref("network.dns.disableIPv6", true);
user_pref("network.dns.disablePrefetch", true);
user_pref("network.prefetch-next", false);

[toc] | [prev] | [next] | [standalone]

#741

On Sat, 29 Oct 2011 15:29:15 +0000, blues2use wrote:

> I have recently started using high-speed Comcast cable modem @ 15MBPS. I
> am having a problem with web pages loading slowly in Mint. I am running
> a dual boot Mint/Win7 desktop pc hardwired to the router. The pages load
> nearly instantaneously in Win7 (Firefox or Chrome) but lag considerably
> in Mint. I have noticed that when I navigate to a web page I see the
> "Looking up whateversite.com" in the lower left corner and "sending
> request" followed by "waiting for whateversite.com" in Firefox and
> Chrome until the page actually loads. I have checked the DNS settings in
> Win7 and Mint and they are the same. Thunderbird and Pan speeds are
> unaffected.
> 
> At this point, I'm looking for suggestions to check for what might be
> causing this lag or how to correct it. BTW, this desktop pc is connected
> via ethernet cable to my router. The wireless laptops being served by
> the router (running dual boot XP/Mint) load pages extremely quickly as
> well in either operating system. Therefore, it seems that there is
> something wrong in my network settings on this particular Win7/Mint
> desktop pc configuration.
> 
> Ethernet info - Ethernet controller: Broadcom Corporation NetXtreme
> BCM5755 Gigabit Ethernet PCI Express (rev 02)
> 
> Router - Linksys WRT54G
> 
> Suggestions for what to check will be most appreciated.
> 
> Thanks in advance..

I have reverted to Mint 10 from 11 and my slow loading issue is fixed. I 
have no idea why 11 would have worked fine for a while and then started 
the web page lagging issue.

Anyway, thanks to all for the suggestions. I appreciate your help...

[toc] | [prev] | [next] | [standalone]

#742

On Sunday, October 30th, 2011 at 16:08:19h +0000, Blues2Use wrote:

> I have reverted to Mint 10 from 11 and my slow loading issue is fixed.

No the issue is not fixed.  You have merely hidden the issue,
rather like sweeping dirt under the carpet.

[toc] | [prev] | [next] | [standalone]

#743

On Sun, 30 Oct 2011 17:31:38 +0000, J G Miller wrote:

> On Sunday, October 30th, 2011 at 16:08:19h +0000, Blues2Use wrote:
> 
>> I have reverted to Mint 10 from 11 and my slow loading issue is fixed.
> 
> No the issue is not fixed.  You have merely hidden the issue, rather
> like sweeping dirt under the carpet.

That may well be true but I had nothing else to check to try and 
alleviate the lagging problem. It would seem that working under Mint 10 
does not necessarily mean working under Mint 11. At this point, using 10 
without the lag is more important for me than troubleshooting an ongoing 
condition in 11.

Thanks 

[toc] | [prev] | [next] | [standalone]

#744

On 30/10/2011 18:31, J G Miller wrote:
> On Sunday, October 30th, 2011 at 16:08:19h +0000, Blues2Use wrote:
>
>> I have reverted to Mint 10 from 11 and my slow loading issue is fixed.
>

Did you keep the same Firefox and Chrome profiles?  It is true that it 
is hard to get real malware on Linux, but it is just as easy to get 
tracking cookies and other such junk, which can sometimes greatly slow 
down web browsing.

> No the issue is not fixed.  You have merely hidden the issue,
> rather like sweeping dirt under the carpet.

This is another carpet-sweeping suggestion, but have you tried using 
Adblock and Flashblock on your browsers?  Most sites are much faster 
without adverts and flashing distractions.

[toc] | [prev] | [next] | [standalone]

#745

On Mon, 2011-10-31, David Brown wrote:
> On 30/10/2011 18:31, J G Miller wrote:
>> On Sunday, October 30th, 2011 at 16:08:19h +0000, Blues2Use wrote:
>>
>>> I have reverted to Mint 10 from 11 and my slow loading issue is fixed.
>>
>
> Did you keep the same Firefox and Chrome profiles?  It is true that it 
> is hard to get real malware on Linux, but it is just as easy to get 
> tracking cookies and other such junk, which can sometimes greatly slow 
> down web browsing.
>
>> No the issue is not fixed.  You have merely hidden the issue,
>> rather like sweeping dirt under the carpet.
>
> This is another carpet-sweeping suggestion, but have you tried using 
> Adblock and Flashblock on your browsers?  Most sites are much faster 
> without adverts and flashing distractions.

A tcpdump from the time the problem happened (with a freshly rebooted
system, i.e. no cached info in the resolver) would probably have
revealed the cause.

/Jorgen

-- 
  // Jorgen Grahn <grahn@  Oo  o.   .     .
\X/     snipabacken.se>   O  o   .

[toc] | [prev] | [next] | [standalone]

#748

On Mon, 31 Oct 2011 08:44:22 +0000, Jorgen Grahn wrote:

> On Mon, 2011-10-31, David Brown wrote:
>> On 30/10/2011 18:31, J G Miller wrote:
>>> On Sunday, October 30th, 2011 at 16:08:19h +0000, Blues2Use wrote:
>>>
>>>> I have reverted to Mint 10 from 11 and my slow loading issue is
>>>> fixed.
>>>
>>>
>> Did you keep the same Firefox and Chrome profiles?  It is true that it
>> is hard to get real malware on Linux, but it is just as easy to get
>> tracking cookies and other such junk, which can sometimes greatly slow
>> down web browsing.
>>
>>> No the issue is not fixed.  You have merely hidden the issue, rather
>>> like sweeping dirt under the carpet.
>>
>> This is another carpet-sweeping suggestion, but have you tried using
>> Adblock and Flashblock on your browsers?  Most sites are much faster
>> without adverts and flashing distractions.
> 
> A tcpdump from the time the problem happened (with a freshly rebooted
> system, i.e. no cached info in the resolver) would probably have
> revealed the cause.
> 
> /Jorgen

Ok, thanks...I'll remember that if the situation occurs again. Likely I 
will upgrade to 11 again just to see if the problem reoccurs. It only 
takes me about an hour to completely install a working system so it's not 
a big deal. It's just the idea that it was a network setting or other 
error that I couldn't find. Even the local DNS caching really didn't 
help...

[toc] | [prev] | [next] | [standalone]

#749

On Mon, 2011-10-31, bluse2use wrote:
> On Mon, 31 Oct 2011 08:44:22 +0000, Jorgen Grahn wrote:
>
>> On Mon, 2011-10-31, David Brown wrote:
>>> On 30/10/2011 18:31, J G Miller wrote:
>>>> On Sunday, October 30th, 2011 at 16:08:19h +0000, Blues2Use wrote:
>>>>
>>>>> I have reverted to Mint 10 from 11 and my slow loading issue is
>>>>> fixed.
>>>>
>>>>
>>> Did you keep the same Firefox and Chrome profiles?  It is true that it
>>> is hard to get real malware on Linux, but it is just as easy to get
>>> tracking cookies and other such junk, which can sometimes greatly slow
>>> down web browsing.
>>>
>>>> No the issue is not fixed.  You have merely hidden the issue, rather
>>>> like sweeping dirt under the carpet.
>>>
>>> This is another carpet-sweeping suggestion, but have you tried using
>>> Adblock and Flashblock on your browsers?  Most sites are much faster
>>> without adverts and flashing distractions.
>> 
>> A tcpdump from the time the problem happened (with a freshly rebooted
>> system, i.e. no cached info in the resolver) would probably have
>> revealed the cause.
>> 
>> /Jorgen
>
> Ok, thanks...I'll remember that if the situation occurs again. Likely I 
> will upgrade to 11 again just to see if the problem reoccurs.

Then I suggest tcpdumping /before/ the upgrade too, to get something to
compare with. Make sure you capture the entire name server queries and
responses as well as the actual www chatter.

/Jorgen

-- 
  // Jorgen Grahn <grahn@  Oo  o.   .     .
\X/     snipabacken.se>   O  o   .

[toc] | [prev] | [next] | [standalone]

#750

On Mon, 31 Oct 2011 15:23:02 +0000, Jorgen Grahn wrote:

> On Mon, 2011-10-31, bluse2use wrote:
>> On Mon, 31 Oct 2011 08:44:22 +0000, Jorgen Grahn wrote:
>>
>>> On Mon, 2011-10-31, David Brown wrote:
>>>> On 30/10/2011 18:31, J G Miller wrote:
>>>>> On Sunday, October 30th, 2011 at 16:08:19h +0000, Blues2Use wrote:
>>>>>
>>>>>> I have reverted to Mint 10 from 11 and my slow loading issue is
>>>>>> fixed.
>>>>>
>>>>>
>>>> Did you keep the same Firefox and Chrome profiles?  It is true that
>>>> it is hard to get real malware on Linux, but it is just as easy to
>>>> get tracking cookies and other such junk, which can sometimes greatly
>>>> slow down web browsing.
>>>>
>>>>> No the issue is not fixed.  You have merely hidden the issue, rather
>>>>> like sweeping dirt under the carpet.
>>>>
>>>> This is another carpet-sweeping suggestion, but have you tried using
>>>> Adblock and Flashblock on your browsers?  Most sites are much faster
>>>> without adverts and flashing distractions.
>>> 
>>> A tcpdump from the time the problem happened (with a freshly rebooted
>>> system, i.e. no cached info in the resolver) would probably have
>>> revealed the cause.
>>> 
>>> /Jorgen
>>
>> Ok, thanks...I'll remember that if the situation occurs again. Likely I
>> will upgrade to 11 again just to see if the problem reoccurs.
> 
> Then I suggest tcpdumping /before/ the upgrade too, to get something to
> compare with. Make sure you capture the entire name server queries and
> responses as well as the actual www chatter.
> 
> /Jorgen

OK and thanks for the suggestions...

I appreciate you taking the time to offer assistance...

[toc] | [prev] | [next] | [standalone]

Page 1 of 2  [1] 2  Next page →

Back to top | Article view | comp.os.linux.networking

csiph-web