For reference... trying to accelerate large data file transfers by reducing PC time to ACK
This thread started me on some experiements, trying to quickly 'throttle-up' the connection packet size to fool (quickly calibrate?) the slow start-up or congestion control. May not be accurate in reality, but was the idea in my mind. What worked for me... I quickly found that the first image packet size (in response to GET) could not exceed half my configured MSS=1460. The second packet size could not exceed 1460-(first size). >From there I tried ramping up the packet size 100 bytes per packet - it worked, no long delays to PC ACK. After playing with the 'ramp' rate, I eventually found it worked fine taking the third packet and beyond to the 1460 byte limit (although, I thought at one point the delays came back if I ramped too fast?). I don't know that it will work one day or one computer to the next, but perhaps my experience will help someone else. The modification changed my tests from 'dialup-like' to 'broadband-like' impressions of the transfer (I don't currently have transfer rate numbers for comparison). Best regards, Alan _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
