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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: netdev@vger.kernel.org, Nandita Dukkipati <nanditad@google.com>
Subject: Re: [PATCH] tcp: sysctl for initial receive window
Date: Fri, 21 Sep 2012 17:25:11 +0200	[thread overview]
Message-ID: <1348241111.2669.580.camel@edumazet-glaptop> (raw)
In-Reply-To: <20120921085502.4534.20232.stgit@dragon>

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

  reply	other threads:[~2012-09-21 15:25 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-21  8:55 [PATCH] tcp: sysctl for initial receive window Jesper Dangaard Brouer
2012-09-21 15:25 ` Eric Dumazet [this message]
2012-09-21 17:34   ` Jesper Dangaard Brouer
2012-09-21 17:56   ` David Miller
2012-09-21 18:32     ` Jesper Dangaard Brouer
2012-09-21 18:48       ` David Miller
2012-09-26 11:53         ` Eric Dumazet
2012-10-01 22:36           ` Yuchung Cheng
2012-09-25  5:29 ` Jan Engelhardt

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