netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jesper Dangaard Brouer <jbrouer@redhat.com>
To: "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Cc: Tom Herbert <tom@herbertland.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Tool for sampling /proc/net/softnet_stat statistics
Date: Mon, 7 Mar 2016 16:36:07 +0100	[thread overview]
Message-ID: <20160307163607.1da5f17e@redhat.com> (raw)

Hi Google,

While playing with RPS, I needed to read stats from 
/proc/net/softnet_stat and the tools I could find [1] and [2] was not
very good.

I lack of better, I coded up my own tool softnet_stat.pl here:
 https://github.com/netoptimizer/network-testing/blob/master/bin/softnet_stat.pl

The output format/columns in /proc/net/softnet_stat is undocumented,
plus values are printed in hex.  E.g. to decode the columns you need to
read kernel function kernel softnet_seq_show() in
kernel/net/core/net-procfs.c.

To make things easier I wrote this small perl script for get
so human readable statistics from /proc/net/softnet_stat.

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  Author of http://www.iptv-analyzer.org
  LinkedIn: http://www.linkedin.com/in/brouer


[1] https://www.redhat.com/archives/rhl-list/2007-September/msg03735.html

[2] https://gist.github.com/SaveTheRbtz/172b2e2eb3cbd96b598d

             reply	other threads:[~2016-03-07 15:36 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-07 15:36 Jesper Dangaard Brouer [this message]
2016-03-07 17:54 ` Tool for sampling /proc/net/softnet_stat statistics Willem de Bruijn
2016-03-08  9:50   ` Jesper Dangaard Brouer
2016-07-05 12:20     ` Jesper Dangaard Brouer
2016-03-08 19:47 ` David Miller

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20160307163607.1da5f17e@redhat.com \
    --to=jbrouer@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=tom@herbertland.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).