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Fast Internet - Slow DNS Lookup While Downloads Are Going?

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5 replies to this topic

#1
Redhatcc

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Here is an overview of what I have. I currently upgraded from DSL when I moved to Cable now. My connection before worked very fine. I still use the same hardware such as nic, cables, and switch at my new house. My cable speeds are 30mbps down, 5mbps up. This is what has been happening, and I will use tonight as an example.


I start downloading World Of Warcraft. It is running at a moderately slow download speed of 300kbps (considering my download spee is 30mbps). Now when I go to navigate to lets say Hotmail.com, the dns lookup either fails by timing out, or it takes roughly 20 seconds to find the page.
If i stop any downloads that I have, such as the slow download World Of Warcraft tonight, my dns lookup goes back to being fast. Not sure why a download would make my pages load so slowly. I have tried the following.

1. Skipping my switch and plugging directly into my surfboard modem, same problem still.
2. I have tried configuring my dns to use googles 8.8.8.8 and 8.8.4.4 thinking it is my ISP's dns that is sluggish, doesn't help.
3. While my outside connection in a web browser is terrible during downloads, i can navigate to my modem in a browser, and do a tracert to google.com just fine. So my router can hit outside ip's.
4. During the downloads, I fail to ping addresses I know are up host (ping works after i stop my downloads)


Any advice would be appreciated. Next step, updating my current drivers (although this problem did not occur until I moved).


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#2
5eraph

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It's been a couple years since I've played, but World of Warcraft used (uses?) bittorrent to distribute its files and updates. Even if throughput is low, protocol traffic can be high. Like I said, it's been a while, but see if there's a way to limit the simultaneous connections it is allowed to make.

Hopefully somebody more familiar with the current state of the game can help more.

#3
Redhatcc

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Thanks,

It was doing that with WoW download, but its like that for any download as well. P2P FTP etc.

Also, when I power up my computer, it takes a min before I can browse to any websites ex. this morning, Powered up the machine, waited 3 mins then could navigate to this website. If I power up my machine and immediately go to any website it times out. Note that this is after I gain my static ip from my router and I can ping my router, but I cant browse for another 2-3 mins.

#4
bphlpt

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Also, when I power up my computer, it takes a min before I can browse to any websites ex. this morning, Powered up the machine, waited 3 mins then could navigate to this website. If I power up my machine and immediately go to any website it times out. Note that this is after I gain my static ip from my router and I can ping my router, but I cant browse for another 2-3 mins.


That has seemed to be somewhat normal behavior to me. MS seems to have sped up the display of the desktop to give the user a warm fuzzy feeling from a quick "boot", but it's still not completely ready to do all tasks. But 3 mins does seem a little long. You might check out this - http://www.msfn.org/...yresume-issues/ - and see if MagicAndre1981 can give you any help with your power up speed.

Cheers and Regards

Edited by bphlpt, 17 October 2011 - 09:36 AM.

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#5
puntoMX

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I had these problems as well, and it was due to my ISP not giving much connections, has also nothing to do with down and up speeds. I say limited number of connections is your problem. Nothing you can do, not even local QoS will help, it's your ISP to blame.

#6
tain

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Are you using win7? I've seen this slow DNS issue on a couple of win7 boxes lately.




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