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Old 10-30-2006, 01:05 PM   #1
Tisch
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Registered: Jan 2004
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Why is browsing internet so bloody slow?


Hi,

Since i installed slackware 11 on my computer, surfing the internet is pain in the ass! Its slow, very slow. I dont mean downloading, thats fast as usual, but when it comes to surfing the web, its stupid. The whole time, "Connecting to www.linuxquestions.org" or "www.something.com" for 5 damn minutes everytime i click on a link in the forums or whatever.. it keeps connecting for 5 min and then loads the page.. its just very very frustrating. As far as i know i have no firewal enabled on the system, and yes i have a 10/10mbit line. so slow it should not be!
Tested all webbrowsers.
Any ideas?
thanx
//Tisch

Slack 11, 2.6.18 kernel.
 
Old 10-30-2006, 01:35 PM   #2
uselpa
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That sounds like a DNS issue.
Try `dig www.linuxquestions.org` and report us the query time (at the bottom of the output).
 
Old 11-09-2006, 04:43 PM   #3
hrp2171
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I've noticed the slow down you talk about but when logged on with my user account. When I'm on as root, the Internet connection is superfast.
 
Old 11-09-2006, 08:13 PM   #4
masonm
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I was also seeing some slow net performance. I installed Guarddog and configured my firewall and it's nice and fast now. I can't really say what changed but it definitely made a huge difference.
 
Old 11-13-2006, 08:13 PM   #5
granth
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What nic drivers do you have loaded?
 
Old 11-22-2006, 11:01 AM   #6
Basel
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I having the same issue with slow Internet surfing yet normal download speed. Here is the output of dig for some websites:
Code:
basel@slack-amd64:~$ dig www.linuxquestions.org
;; Query time: 578 msec

basel@slack-amd64:~$ dig www.kooora.com
;; Query time: 3659 msec

basel@slack-amd64:~$ dig www.psu.com
;; Query time: 1078 msec

basel@slack-amd64:~$ dig www.theserverside.com
;; Query time: 2478 msec
How can I know what nic drivers are loaded on my machine?

Last edited by Basel; 11-22-2006 at 11:04 AM.
 
Old 11-22-2006, 11:52 AM   #7
hrp2171
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Basil,

If you know the NIC's manufacturer or model name, as root type:

lsmod

or

lspci

and look for your NIC information.
-------------------------------------------------------------------------------------------------------
Masonm,

I have installed guarddog on my home pc. Thanks for the tip. What kind of changes did you make for the browsing to go faster? Thanks.

Before installing guarddog, I ran iptables -L and iptables -t nat -L but it's all a foreign language to me. The iptables man page didn't make it any better.

Last edited by hrp2171; 11-22-2006 at 11:56 AM.
 
Old 11-22-2006, 12:04 PM   #8
Basel
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hrp2171, Did your Internet browsing go faster after installing guarddog?
Code:
root@slack-amd64:/home/basel# lspci | grep Ethernet
00:05.0 Bridge: nVidia Corporation CK8S Ethernet Controller (rev a2)
02:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)

Last edited by Basel; 11-22-2006 at 12:06 PM.
 
Old 11-22-2006, 12:14 PM   #9
masonm
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Quote:
Originally Posted by hrp2171
Basil,

If you know the NIC's manufacturer or model name, as root type:

lsmod

or

lspci

and look for your NIC information.
-------------------------------------------------------------------------------------------------------
Masonm,

I have installed guarddog on my home pc. Thanks for the tip. What kind of changes did you make for the browsing to go faster? Thanks.

Before installing guarddog, I ran iptables -L and iptables -t nat -L but it's all a foreign language to me. The iptables man page didn't make it any better.
I have no idea which changes affected it. I simply set up permissions for the services I use and blocked everything else to create a strong firewall.
 
Old 11-22-2006, 01:43 PM   #10
hrp2171
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Those iptables commands are just for listing what's already in place. I'm going to post the output and see if someone can decipher it for me.

I going to RTFM on guarddog and I'll try to find a good iptables tutorial.
 
Old 11-23-2006, 04:27 AM   #11
Basel
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I've noticed an improvement after disabling ipv6. I added the following two lines to /etc/modprobe.conf
Code:
alias net-pf-10 off
alias ipv6 off
I tried adding "blacklist ipv6" to /etc/modprobe.d/blacklist but it did not do anything.

Last edited by Basel; 11-23-2006 at 04:29 AM.
 
Old 11-23-2006, 06:07 AM   #12
uselpa
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One tip I could give is using dnsmasq. Some of the DNS response times shown in these threads are quite high, and internet browsing does a lot of redundant DNS lookups. Using dnsmasq, these lookups are slow only the first time. It brought a huge improvement for me.
 
  


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