Upload speed problems with large files

• Dan in Dallas :

Most likely your ISP caps your upstream speed.

You don't mention what kind of connection you have. Most broadband connections are 10 times as fast (or more) downstream versus upstream. The reason your uploads are slower is because you have a slower upstream connection, probably 256kbps, which would account for your speeds. The

Actually, I did mention that I'm on Verizon FIOS with a 2Mbps upload speed (5Mbps download, but that's not the issue). There is no cap - as I mentioned, the speed starts out at full-speed, then *decreases* over time on a per-file basis. Each new file starts out at full speed.

I am monitoring the transfer speeds live, so I know for sure what I'm getting.

Where are you uploading to? You're limited by the capabilities of the server being uploaded to. You're also limited by every link between you and the end point.

What you describe could be a buffer someplace filling up. There's no easy way to test where that might be, but if it's anywhere outside your Verizon FIOS MAN, your 2Mbps cap may be irrelevant.

Is this a wireless connection or wired?

Upload speed always is dependent on the recieve speed at the other end. If this is upload to your Verizon personal web/file space, Verizon might well be limiting upload simply to prevent its servers from being used for "illicit" purposes. FTP sites might also be limiting receipts to help with sharing resources. You might try

Wired connection. Upload to non-Verizon site via FTP.

So it could be a "buffer filling up"? Could that be anywhere in the path between me and the destination? It does appear that some days, the problem exists, and some days it does not.