[necro]

2 years ago we were discussing a few of the direct advantages of this in a comment here http://news.ycombinator.com/item?id=1143317 including tcp_slow_start_after_idle which also interacts with icwnd.

Also it's much easier as of late to get the benefit from a larger initial cwnd. Back then you needed to recompile the kernel with source tweaks, now you just use a backport or depending on your distro version you already have the benefit as kernel 2.6.39 has the change... http://kernelnewbies.org/Linux_2_6_39

[youngtaff]

If you need it IW10 can now be implemented on Windows Server 2008 R2 see - http://www.andysnotebook.com/2011/11/increasing-the-tcp-init...

Jim Gettys article "IW10 Considered Harmful" is worth a read too - http://tools.ietf.org/html/draft-gettys-iw10-considered-harm...