linux-kernel - Re: [PATCH] Disable TCP_DEBUG and FASTRETRANS

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Message-ID: <CAEik5nPciVMwOE-hC+oPP1gMEvRzbhFwAZHKNQnHEc0YOUXuWA@mail.gmail.com>
Date:	Fri, 21 Oct 2011 20:54:09 -0500
From:	Dan McGee <dpmcgee@...il.com>
To:	Flavio Leitner <fbl@...hat.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
	kaber@...sh.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Disable TCP_DEBUG and FASTRETRANS_DEBUG by default

On Wed, Oct 19, 2011 at 12:16 PM, Flavio Leitner <fbl@...hat.com> wrote:
> On Mon, 17 Oct 2011 17:52:38 -0400 (EDT)
> David Miller <davem@...emloft.net> wrote:
>
>> From: Dan McGee <dpmcgee@...il.com>
>> Date: Mon, 17 Oct 2011 15:25:24 -0500
>>
>> > If these are truly debug options, they should be turned off by default
>> > and can be tweaked if necessary. Fix one usage of the flag to use #if
>> > instead of #ifdef so defining to zero is acceptable.
>> >
>> > Signed-off-by: Dan McGee <dpmcgee@...il.com>
>>
>> Illegal window shrinks are a serious issue, and the fact that everyone
>> will see those messages by default and sometimes report them has been
>> tremendously useful.
>>
>
> Agreed. I recently got bug report because of that message.  It is useful
> and doesn't disturbe when network is fine, so please don't remove it.
Can we kill TCP_DEBUG completely then? This is the only place it is
used, and it clearly is mislabeled if this is a "serious" and "useful"
feature.

Can anyone weigh in on FASTRETRANS_DEBUG and setting that to 0 by default?

-Dan
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