Hi All, I am trying to experiment with increasing the size of the initial congestion window to speed up higher latency connections. I tried setting this via route on one of my load balancers with Kernel version 2.6.32 (It seems the ability to adjust the initial receive window is in later versions, but I believe 2.6.32 should support the initial send window size ):
<clientIP> via <gateway-ip> dev eth0 proto static initcwnd 10 Comparing packet captures, the SYN/ACK packet has the "Calculated Window Size" (according to wireshark) at 5792 both before and after the route change -- so this doesn't seem to effect the initial window size. 1) Am I looking in the right place to see if this working (Window Size in the SYN/ACK Packet sent by the load balancer?) 2) If I am looking in the right place, any ideas why this isn't working? I saw a mention of initcwnd in the 1.6 ROADMAP in git, so maybe HAProxy wouldn't take advantage of this by default in 1.5? Thanks! Kyle
