Are Linodes behind a web proxy?

I've been doing some speed tests over HTTP and sometimes the transfer goes at a slow clip (8 Mbits/sec), sometimes at a reasonable rate (20 Mbits/sec) and sometimes very quickly (in excess of 180 Mbits/sec). I'm doing transfers to/from Amazon EC2 and to/from a local colo facility where I live.

The transfer rate is highly variable, leading me to believe that either there's a web proxy between Linode and these other places or Linodes pipes are sparodically highly congested.

Your probably forgetting traffic from other users on your linode. Obviously theres a limit on the capacity of the network card, and that is going to be shared against the number of users on your node.

If they are others are using a lot at the same time, then its obviously going to slow yours down.

That said, the pipes probably do get high congestion occasionally with the odd DDOS attack, and just general consumption.

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