From: Stephen Hemminger <stephen@networkplumber•org>
To: Matthew Hall <mh@mhcomputing•net>
Cc: netdev@vger•kernel.org
Subject: Re: per-PID network stats files in /proc
Date: Tue, 24 Sep 2013 13:41:57 -0700 [thread overview]
Message-ID: <20130924134157.4fc22806@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <20130924201536.GA3555@mhcomputing.net>
On Tue, 24 Sep 2013 13:15:37 -0700
Matthew Hall <mh@mhcomputing•net> wrote:
> Hello,
>
> I have an application that I'd like to make self-tuning, based upon the values
> of some of the network stats counters. Thus I went reading through a copy of
> linux-3.11.1 to look for some more information, and began exploring procfs as
> well.
>
> I discovered some system-wide counters in /proc/net/snmp which are pretty
> interesting so I was trying to use the per-PID counters in
> /proc/net/PID/net/snmp as well.
>
> Unfortunately I found that all of these files seem to be identical on my own
> system running Linux 3.2.0:
>
> $ md5sum /proc/net/snmp /proc/1/net/snmp /proc/2/net/snmp
> 8b92b426f860d0667a780cd8baabb7bf /proc/net/snmp
> 8b92b426f860d0667a780cd8baabb7bf /proc/1/net/snmp
> 8b92b426f860d0667a780cd8baabb7bf /proc/2/net/snmp
>
> I found the snmp_seq_show function in net/ipv4/proc.c which prints these
> statistics to see how it really worked, but then I was having a hard time
> finding out what's really calling this code since it hooks up to the /proc
> framework.
>
> Is there some option one can change which enables gathering the network
> statistics per-PID, or per-socket? This would be a tremendous help for my
> application.
>
> Thanks,
> Matthew.
No. because most of these would be associated with global state.
Even sockets can be shared between PID's.
next prev parent reply other threads:[~2013-09-24 20:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-24 20:15 per-PID network stats files in /proc Matthew Hall
2013-09-24 20:41 ` Stephen Hemminger [this message]
2013-09-24 20:44 ` Matthew Hall
2013-09-24 21:02 ` Eric Dumazet
2013-09-24 21:04 ` Stephen Hemminger
2013-09-24 21:22 ` Matthew Hall
2013-09-26 20:12 ` Matthew Hall
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