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Old 13th August 2013, 11:39 AM
glennzo Offline
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My perception of Internet speed

Seems lately that Fedora 19 Internet performance is extremely slow, most of the time. Painful would be a good description. Often times it takes 60 seconds or more to load web pages. This is apparently not the case for anyone else in this household regardless of what they're using. There are several laptops, a couple desktops, a netbook, a kindle and several Android based phones. Of course, these devices are all running Windows, Android OS or other consumer OS's. I've asked them all if they have any issues with the Internet and they've all said no, it works well save for the occasional and not unexpected issues with buffering, etc.

No so for me. Right now I've rebooted my desktop to Windows 7 just to see if there is any difference with the Internet. Seems to be OK. Speedtests show 70+ MB download and web browsers seem to work as expected. I've performed 0 diagnostics under Fedora, basically because I have no idea where to start. I have disabled IPV6 for the system and under Firefox and SeaMonkey and changed my nameservers to those of OpenDNS. My next thought is to find out what native Linux tools can be used for monitoring and diagnosing such perceived issues. I also feel that I should boot into older F19 kernels and boot other OS's such as Fedora 18, CentOS, Debian, etc for the sake of comparison.

Any thoughts or comments? Tips?
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  #2  
Old 13th August 2013, 11:45 AM
smr54 Online
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Re: My perception of Internet speed

Have you tried disabling ipv6?

http://www.fclose.com/tutorial/3687/...dora-17-linux/
That's for F17 but should still be good. A few years ago, that seemed to be the issue for many people.

I haven't noticed such a thing with F19 or F20.

Clearing browser cache would also be one of the first things I'd do.
Try under another username to see that it's not something in your profile, too.
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  #3  
Old 13th August 2013, 12:03 PM
bob Online
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Re: My perception of Internet speed

I see that you've done the IPV6 fix, so how about skipping Firefox for the moment and installing/testing Chrome, since SeaMonkey's a kissing cousin of Firefox. At least you'd know if it's browser-related.
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  #4  
Old 13th August 2013, 12:07 PM
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Re: My perception of Internet speed

I would start the investigation with these three:
ntop, dig, htop
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  #5  
Old 13th August 2013, 12:07 PM
glennzo Offline
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Re: My perception of Internet speed

@scott. I've disabled IPV6 under Fedora 19. Haven't cleared cache lately. Another user is a great idea.

@bob. Chrome is installed. I'll give it a shot.

At the moment I've booted into Fedora 18 so we'll see how things work here.
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Old 13th August 2013, 12:08 PM
glennzo Offline
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Re: My perception of Internet speed

Quote:
Originally Posted by flyingfsck View Post
I would start the investigation with these three:
ntop, dig, htop
Sweet! Thanks for the tips flyingfsck.
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  #7  
Old 13th August 2013, 01:26 PM
marko Offline
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Re: My perception of Internet speed

Quote:
Originally Posted by glennzo View Post

Any thoughts or comments? Tips?

Go in your dsl or cable modem router and set it to point to opendns DNS servers or some other public dns (google) instead of the junky ones at the ISP

That won't help bandwidth but might help perceived slowness as in pages being slow to start loading
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Old 13th August 2013, 02:09 PM
glennzo Offline
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Re: My perception of Internet speed

Quote:
Originally Posted by marko View Post
Go in your dsl or cable modem router and set it to point to opendns DNS servers or some other public dns (google) instead of the junky ones at the ISP

That won't help bandwidth but might help perceived slowness as in pages being slow to start loading
Thanks for the reply marko. I was in the modem/router the other day and couldn't for the life of me see how to change the dns servers. It's not my first rodeo with these ISP supplied modems either, but damned if I could find the setting. I'll have to have another look-see.
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  #9  
Old 13th August 2013, 03:41 PM
smr54 Online
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Re: My perception of Internet speed

If it's working properly on Windows, it's probably not the DNS server. You can always temporarily change it directly on the machine, editing /etc/resolv.conf.

I don't know how Comcast routers work, it wouldn't surprise me if they block your changing the DNS. A very cursory google indicates that it may not be possible, but regardless, you should be able to change it on the machine.
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  #10  
Old 13th August 2013, 04:11 PM
martinblank64 Offline
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Re: My perception of Internet speed

Was it always that way? If not, maybe check the yum history and see if any network-related packages have been recently updated. I just got F19 up and running on my desktop, and my internet couldn't be faster. I am advertised 50/10 for the speed but actually am getting 57/11. I do not have IPv6 disabled, and in fact my ISP has assigned me an IPv6 global unicast address, I don't think I would want to disable it. I also have Comcast.


You can easily check if DNS is the issue. Find an FTP server you know to be fast, and connect via its IP address. Then try connecting via the hostname and see if that takes any longer. Actually, maybe do that in reverse order so the IP is not in the DNS cache.
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  #11  
Old 13th August 2013, 04:56 PM
BBQdave Offline
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Re: My perception of Internet speed

Quote:
Originally Posted by glennzo View Post
Any thoughts or comments? Tips?
May not be related to F19, but Zeitgeist comes to mind.

In Ubuntu Unity 12.04LTS > System Settings > Privacy, under the Applications tab, you can add applications that you do not want under Zeitgeist's scope.

I added Firefox - do not index, and it sped up browser response and Dash - Search response.

In Fedora Gnome 3 and Ubuntu Unity 12.04LTS, Zeitgeist is set for local indexing only. I am assuming Firefox in F19 is under Zeitgeist's scope, but not sure how you would adjust that in F19?
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  #12  
Old 13th August 2013, 08:29 PM
flyingfsck Offline
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Re: My perception of Internet speed

$ cat /etc/resolv.conf
$ man dig

then:
$ dig @dnsipaddress www.example.com

Figure out which DNS in the list is lame and replace it - right click Network Manager and set it to use a fast DNS of your choosing.[COLOR="Silver"]
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