On Fri, 2010-02-05 at 16:00 +0800, yueyue papa wrote: > Is there configuration problem in my setup? > > Why my download is only half of my upload?
You have a very small receive window (just 4 * MSS), and so the other end can only have 4 segments in flight to you at any one time until you ack them. It will therefore send four segments, then wait a while to receive the ACKs, then send more. This waiting means lower performance. In the other direction, the other end probably has a larger receive window, so lwIP doesn't have to stop to wait for ACKs to give more window space, so it can just send continually. This means higher performance in that direction. Kieran _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
