Re: Optimizing a high-latency connection

2006-08-29 Thread Brian Candler
On Fri, Aug 25, 2006 at 03:46:22PM +0200, Morgan wrote: > I'm trying som file transfers across the globe. The RTT is almost 400ms and > the transfer rate is painfully slow. There are 24 router hops on the path > and I assume most of the problem is there The number of routers isn't an issue, as lon

Re: Optimizing a high-latency connection

2006-08-25 Thread Petri Helenius
Increase sendspace an recvspace depending which way your data is going: net.inet.tcp.sendspace: 57344 net.inet.tcp.recvspace: 256000 TCP window scaling is enabled by default nowadays if I remember correctly. Pete Morgan wrote: Hi. I'm trying som file transfers across the globe. The RTT is a

Optimizing a high-latency connection

2006-08-25 Thread Morgan
Hi. I'm trying som file transfers across the globe. The RTT is almost 400ms and the transfer rate is painfully slow. There are 24 router hops on the path and I assume most of the problem is there but I wonder if there are any sysctl variables I can trim on my side to help this problem slightly? I