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

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Message-ID: <20130924140435.5881cf76@nehalam.linuxnetplumber.net>
Date:	Tue, 24 Sep 2013 14:04:35 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Matthew Hall <mh@...omputing.net>
Cc:	netdev@...r.kernel.org
Subject: Re: per-PID network stats files in /proc

On Tue, 24 Sep 2013 13:44:42 -0700
Matthew Hall <mh@...omputing.net> 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?
> 
> Thanks,
> Matthew.

/proc/PID/net is symlink to the processes network namespace.

You could do what you want by putting each process in own network
namespace, but that might be more work than you want to bother with.
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