netdev - Re: per-PID network stats files in /proc

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Message-ID: <1380056549.3165.117.camel@edumazet-glaptop>
Date:	Tue, 24 Sep 2013 14:02:29 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Matthew Hall <mh@...omputing.net>
Cc:	Stephen Hemminger <stephen@...workplumber.org>,
	netdev@...r.kernel.org
Subject: Re: per-PID network stats files in /proc

On Tue, 2013-09-24 at 13:44 -0700, Matthew Hall wrote:
> On Tue, Sep 24, 2013 at 01:41:57PM -0700, Stephen Hemminger wrote:
> > No. because most of these would be associated with global state.
> > Even sockets can be shared between PID's.
> 
> OK. So if this is true, then I feel compelled to ask, why does 
> /proc/PID/net/snmp exist in the first place, if it would never really work?

That because of network containers

You can perfectly use a network container to get your own copy of
counters

ip netns help


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