Re: [PATCH] tcp: sysctl for initial receive window

On Fri, 2012-09-21 at 10:55 +0200, Jesper Dangaard Brouer wrote:

Make it possible to adjust the TCP default initial advertised receive
window, via sysctl /proc/sys/net/ipv4/tcp_init_recv_window.

The window size is this value multiplied by the MSS of the connection.
The default value is (still) 10, as descibed in commit 356f039822b
(TCP: increase default initial receive window.)

Allow minimum value of 1, but recommend against setting value below 2
in the documentation.

Its possible to control/override this value per route table entry via
the iproute2 option initrwnd.  Having the global default exported via
sysctl, helps determine the default setting, and make is easier to
adjust.

I was wondering why its not symmetric :

If we add a sysctl for initial receive window, we need another one for
initial send window ?

Thanks