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LAN Party Forums => General Discussion => Started by: Petch on November 18, 2010, 11:58:00 AM

Title: Is your ISP throttling your bandwidth?
Post by: Petch on November 18, 2010, 11:58:00 AM
Now you can check!  Found this site on LifeHacker earlier today...


http://broadband.mpi-sws.org/transparency/glasnost.php#tests (http://broadband.mpi-sws.org/transparency/glasnost.php#tests)
Title: Re: Is your ISP throttling your bandwidth?
Post by: Czar on November 18, 2010, 01:25:05 PM
Saw the post yesterday and the servers have been overloaded since then :( poo
Title: Re: Is your ISP throttling your bandwidth?
Post by: KnightZero on November 18, 2010, 11:02:31 PM
I'm surprised that Comcast isn't throttling, according to this site.  I'm switching to FIOS on Monday, so we'll see if that changes.
Title: Re: Is your ISP throttling your bandwidth?
Post by: sully! on November 20, 2010, 07:01:28 AM
Comcast does not throttle your bandwidth (as in, reduce your throughput). It applies QoS prioritization to your traffic if you are using above a certain percentage of all available bandwidth in your service group on the CMTS. This utilization is measured as a moving average over a period of, I think, 5 or 10 minutes. So if you're wailing away on a torrent, an http download, an FTP download, or any other kind of transfer (it's protocol independent), you are simply moved to the bottom of the list in priority until your 5 or 10 minute average utilization falls below the threshold, then you are granted the same priority as everyone else.

How we get "treated" during our large LAN so we are always getting the max speed, the headend supervisor moves us to our own service group. That way, even though we're always well above the threshold for prioritization and do in fact receive that lower priority, because we're the only one in the service group, there's no one to be prioritized behind.
Title: Re: Is your ISP throttling your bandwidth?
Post by: vincegun on November 20, 2010, 09:54:21 AM
That's a nifty bit of info.

The more you know!