netdev - Re: cat /proc/net/tcp takes 0.5 seconds on x86

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Message-Id: <20080827.023931.114686718.davem@davemloft.net>
Date:	Wed, 27 Aug 2008 02:39:31 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	j.w.r.degoede@....nl
Cc:	dada1@...mosbay.com, davej@...hat.com, netdev@...r.kernel.org
Subject: Re: cat /proc/net/tcp takes 0.5 seconds on x86_64

From: Hans de Goede <j.w.r.degoede@....nl>
Date: Wed, 27 Aug 2008 11:45:07 +0200

> I'm sorry, but I didn't have the feeling I had many options
> left. I've reported a serious performance regression and all the
> answer I've been getting sofar is: "well if that is slow don't do
> that you silly" which is anything but a satisfying answer.

Eric said merely that applications can get better performance by using
the netlink socket dumping interfaces.  It was "for your information",
rather than being suggested as a fix for the bug.

People have given other forms of useful feedback as well, and the bug
seems to be being looked into.
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