netdev - Re: ss -p is much too slow

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Message-ID: <20100723130125.787c7ddb@nehalam>
Date:	Fri, 23 Jul 2010 13:01:25 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	sphink@...il.com, netdev@...r.kernel.org,
	stephen.hemminger@...tta.com
Subject: Re: ss -p is much too slow

On Fri, 23 Jul 2010 12:48:19 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: David Miller <davem@...emloft.net>
> Date: Mon, 28 Jun 2010 16:21:39 -0700 (PDT)
> 
> > ss: Avoid quadradic complexity with '-p'
> > 
> > Scan the process list of open sockets once, and store in a hash
> > table to be used by subsequent find_user() calls.
> > 
> > Reported-by: Steve Fink <sphink@...il.com>
> > Signed-off-by: David S. Miller <davem@...emloft.net>
> 
> Stephen, please apply this, it fixes the quadratic behavior and
> has been sitting for a month.
> 
> It's in patchwork, just check your todo list.
> 

I saw it but wanted to work out a more general solution,
will apply it next week if mine doesn't work.
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