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Re: [PATCH] fix tcp_default_win_scale.

To: "David S. Miller" <davem@xxxxxxxxxx>
Subject: Re: [PATCH] fix tcp_default_win_scale.
From: Stephen Hemminger <shemminger@xxxxxxxx>
Date: Wed, 7 Jul 2004 11:06:53 -0700
Cc: bert hubert <ahu@xxxxxxx>, jamie@xxxxxxxxxxxxx, netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20040706154907.422a6b73.davem@redhat.com>
Organization: Open Source Development Lab
References: <20040629222751.392f0a82.davem@redhat.com> <20040630152750.2d01ca51@dell_ss3.pdx.osdl.net> <20040630153049.3ca25b76.davem@redhat.com> <20040701133738.301b9e46@dell_ss3.pdx.osdl.net> <20040701140406.62dfbc2a.davem@redhat.com> <20040702013225.GA24707@conectiva.com.br> <20040706093503.GA8147@outpost.ds9a.nl> <20040706114741.1bf98bbe@dell_ss3.pdx.osdl.net> <20040706194034.GA11021@mail.shareable.org> <20040706131235.10b5afa8.davem@redhat.com> <20040706224453.GA6694@outpost.ds9a.nl> <20040706154907.422a6b73.davem@redhat.com>
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I do not argue with that the correct thing to do is to use window scaling
and find/fix the poor sop's stuck behind busted networks.

But: isn't it better to have just one sysctl parameter set (tcp_rmem)
and set the window scale as needed rather than increasing the already
bewildering array of dials and knobs?  I can't see why it would be advantageous
to set a window scale of 7 if the largest possible window ever offered
is limited to a smaller value? 

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