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You are here: MacNN Forums > Other Topics > Networking > Network slowdowns when a certain computer gets on

Network slowdowns when a certain computer gets on
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Oct 12, 2009, 08:44 PM
 
I have a somewhat unique issue, or so I believe. My internet is usually pretty quick. Until my mom gets on with her iMac. She connects via ethernet to my Time Capsule. I'm connected wirelessly to the TC. What's odd is that no other devices are affected (and there are quite a few other ones on the network). Now honestly, I suck at networking. If anyone could give me guidance, I'd be forever appreciative. I've attached screenshots of my setup. The iMac has Tiger, the MBP Snow Leopard.





     
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Oct 12, 2009, 08:47 PM
 
How do you experience the slowdown? Have you measured actual throughput? How are you comparing your MBP's throughput to that of the several other unaffected devices?

Have you checked it's not just a DNS issue? What happens when you remove the OpenDNS IPs?
     
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Oct 12, 2009, 08:52 PM
 
I experience the same thing. However, both computers connect via Airport. My Mac Pro (and previously my G5) both experience slower internet speeds, when a PowerMac G4 (MDD) connects. I just have them shut off the G4 once they are off.
     
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Oct 12, 2009, 09:12 PM
 
Yes, what exactly are the slowdowns you are experiencing? Local transfers? Internet transfers? What is your mom doing on her machine when the slowdowns occur? Downloading large files are watching streaming video? More detail is needed here.

Steve
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Oct 12, 2009, 09:45 PM
 
Oops sorry for being short on info. Internet in general slows down... I'm only downloading about 3 to 10kbps on my MBP at the most. She never does anything too intensive, the most intensive that she does is Hulu. I will take off OpenDNS and see how that works. According to speedtest.net (when I'm not getting the slowdown) I DL at 11.88Mbps, upload at 8.67. So my internet itself is fine.

Edit: Without OpenDNS my network speed went up to 13.43Mbps. Wow.
(Last edited by imitchellg5; Oct 12, 2009 at 09:54 PM. )
     
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Oct 12, 2009, 10:02 PM
 
I don't know if Time Capsule has QoS settings, but it may have them with the default being to favor the ethernet connection. If she likes HD hulu programs, that could cause a slowdown for 50 minutes at a time. x number of programs watched.
     
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Oct 12, 2009, 10:28 PM
 
Apple routers don't have QoS support.
     
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Oct 13, 2009, 06:05 PM
 
It's still going on. My MBP's internet slows down no matter what the iMac is doing...
     
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Oct 13, 2009, 07:00 PM
 
All the Network pane shots appear to be from the MBP. Perhaps the shots from the iMac would reveal something. Some configuration miscue that conflicts with the MBP and/or Time Capsule.
     
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Oct 17, 2009, 09:50 PM
 
I reset my modem and the Time Capsule... now everything seems fine. Except now YouTube videos don't play well... they start playing before it's loaded enough to play the whole video.
     
   
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