From: David Miller <davem@davemloft.net>
To: sanagi.koki@jp.fujitsu.com
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
kaneshige.kenji@jp.fujitsu.com, izumi.taku@jp.fujitsu.com,
kosaki.motohiro@jp.fujitsu.com, nhorman@tuxdriver.com,
laijs@cn.fujitsu.com, scott.a.mcmillan@intel.com,
rostedt@goodmis.org, eric.dumazet@gmail.com, fweisbec@gmail.com,
mathieu.desnoyers@polymtl.ca
Subject: Re: [PATCH v4 4/5] skb: add tracepoints to freeing skb
Date: Mon, 23 Aug 2010 20:53:06 -0700 (PDT) [thread overview]
Message-ID: <20100823.205306.133908715.davem@davemloft.net> (raw)
In-Reply-To: <4C724364.50903@jp.fujitsu.com>
From: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Date: Mon, 23 Aug 2010 18:46:12 +0900
> This patch adds tracepoint to consume_skb and add trace_kfree_skb before
> __kfree_skb in skb_free_datagram_locked and net_tx_action.
> Combinating with tracepoint on dev_hard_start_xmit, we can check how long it
> takes to free transmited packets. And using it, we can calculate how many
> packets driver had at that time. It is useful when a drop of transmited packet
> is a problem.
>
> sshd-6828 [000] 112689.258154: consume_skb: skbaddr=f2d99bb8
>
> Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Acked-by: David S. Miller <davem@davemloft.net>
next prev parent reply other threads:[~2010-08-24 3:53 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-23 9:41 [PATCH v4 0/5] netdev: show a process of packets Koki Sanagi
2010-08-23 9:42 ` [PATCH v4 1/5] irq: add tracepoint to softirq_raise Koki Sanagi
2010-09-03 15:29 ` Frederic Weisbecker
2010-09-03 15:39 ` Steven Rostedt
2010-09-03 15:42 ` Frederic Weisbecker
2010-09-03 15:43 ` Steven Rostedt
2010-09-03 15:50 ` Frederic Weisbecker
2010-09-06 1:46 ` Koki Sanagi
2010-08-23 9:43 ` [PATCH v4 2/5] napi: convert trace_napi_poll to TRACE_EVENT Koki Sanagi
2010-08-24 3:52 ` David Miller
2010-08-23 9:45 ` [PATCH v4 3/5] netdev: add tracepoints to netdev layer Koki Sanagi
2010-08-24 3:53 ` David Miller
2010-08-23 9:46 ` [PATCH v4 4/5] skb: add tracepoints to freeing skb Koki Sanagi
2010-08-24 3:53 ` David Miller [this message]
2010-08-23 9:47 ` [PATCH v4 5/5] perf:add a script shows a process of packet Koki Sanagi
2010-08-24 3:53 ` David Miller
2010-09-07 16:57 ` Frederic Weisbecker
2010-08-30 23:50 ` [PATCH v4 0/5] netdev: show a process of packets Steven Rostedt
2010-09-03 2:10 ` Koki Sanagi
2010-09-03 2:17 ` David Miller
2010-09-03 2:55 ` Koki Sanagi
2010-09-03 4:46 ` Frederic Weisbecker
2010-09-03 5:12 ` Koki Sanagi
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=20100823.205306.133908715.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=eric.dumazet@gmail.com \
--cc=fweisbec@gmail.com \
--cc=izumi.taku@jp.fujitsu.com \
--cc=kaneshige.kenji@jp.fujitsu.com \
--cc=kosaki.motohiro@jp.fujitsu.com \
--cc=laijs@cn.fujitsu.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mathieu.desnoyers@polymtl.ca \
--cc=netdev@vger.kernel.org \
--cc=nhorman@tuxdriver.com \
--cc=rostedt@goodmis.org \
--cc=sanagi.koki@jp.fujitsu.com \
--cc=scott.a.mcmillan@intel.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).