upload speed?

[samuelnw53]

Could someone please tell me what the upload speed is for 750mb ,Thanks Sam

[Ignition]

The upload speed on the 750k package is 128k.

[samuelnw53]

Thanks for the sppdy reply, Sam

[zaax]

If your uploading (128k) why does downloading slow to a crawl?

[ian@huth]

If your uploading (128k) why does downloading slow to a crawl?

Because the download is waiting for ACk packets that get caught in the upload queue. It is far better to throttle back your upload so that it is not being maxed out if you are downloading at the same time.

[Stuart]

If your uploading (128k) why does downloading slow to a crawl?


The simple explanation is this:

Under TCP/IP (the protocol in use on the Internet), the info is sent in "packets". While downloading, the computer sending the data splits it into "packets" and sends one packet. It then waits for the recieving computer to send an Acknowledgment packet. The transmitting computer then sends the next packet and waits and so on. It doesn't happen quite like that, but that is the basis of how it works.


The problem comes when you are uploading and downloading. If you are uploading at max speed, and downloading at the same time, when it has recieved a packet, your computer will have to wait before sending the Acknowledgement packet. The server you are downloading from will wait until it recieves the Acknowledgement Packet (more commonly shortened to ACK), so your downloads will slow down.