From: Satoru Moriya <satoru.moriya@hds.com>
To: Hagen Paul Pfeifer <hagen@jauu.net>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"davem@davemloft.net" <davem@davemloft.net>,
"nhorman@tuxdriver.com" <nhorman@tuxdriver.com>,
"tgraf@infradead.org" <tgraf@infradead.org>,
Stephen Hemminger <stephen.hemminger@vyatta.com>,
"eric.dumazet@gmail.com" <eric.dumazet@gmail.com>,
Seiji Aguchi <seiji.aguchi@hds.com>
Subject: RE: [PATCH v2 0/2] Tracepoint for tcp retransmission
Date: Fri, 3 Feb 2012 15:43:30 -0500 [thread overview]
Message-ID: <65795E11DBF1E645A09CEC7EAEE94B9CB8D3EA3E@USINDEVS02.corp.hds.com> (raw)
In-Reply-To: <02e98f84ee62073e1bf92338f6744fde@localhost>
On 01/25/2012 08:27 AM, Hagen Paul Pfeifer wrote:
> It is crazy to add everywhere new tracepoints. Systemtap is far from
> being perfect and as smooth as dtrace. But this is an example where
> systemtap is suitable and should be used.
>
> Satoru, you wrote systemtap is not suitable - why?
Actually, we've already used systemtap in our flight recorder.
But we believe that tcp retransmission is one of the fundamental
function in tcp stack and so kernel itself should provide the
instruments from which we can get enough information without
tools which is not included in kernel.
Regards,
Satoru
next prev parent reply other threads:[~2012-02-03 20:44 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-20 18:07 [PATCH v2 0/2] Tracepoint for tcp retransmission Satoru Moriya
2012-01-20 18:08 ` [PATCH v2 1/2] tcp: refactor tcp_retransmit_skb() for a single return point Satoru Moriya
2012-01-20 18:09 ` [PATCH v2 2/2] tcp: add tracepoint for tcp retransmission Satoru Moriya
2012-01-20 18:50 ` [PATCH v2 0/2] Tracepoint " David Miller
2012-02-03 21:47 ` Satoru Moriya
2012-02-04 4:40 ` Yuchung Cheng
2012-02-06 18:32 ` Satoru Moriya
2012-02-04 14:28 ` Neil Horman
2012-02-04 15:58 ` Hagen Paul Pfeifer
2012-02-04 20:09 ` Neil Horman
2012-02-05 12:53 ` Frank Ch. Eigler
2012-02-05 19:17 ` Neil Horman
2012-02-05 20:04 ` Hagen Paul Pfeifer
2012-02-05 21:48 ` David Miller
2012-02-06 1:32 ` Neil Horman
2012-02-06 15:20 ` Frank Ch. Eigler
2012-02-06 15:24 ` Eric Dumazet
2012-02-06 15:38 ` Neil Horman
2012-02-06 15:53 ` Neil Horman
2012-02-06 16:18 ` Steven Rostedt
2012-02-06 17:02 ` Eric Dumazet
2012-02-06 17:18 ` Steven Rostedt
2012-02-06 16:21 ` Frank Ch. Eigler
2012-02-06 18:21 ` Satoru Moriya
2012-01-25 13:27 ` Hagen Paul Pfeifer
2012-01-25 14:44 ` Eric Dumazet
2012-01-26 18:51 ` David Miller
2012-02-03 20:31 ` Satoru Moriya
2012-02-03 20:43 ` Satoru Moriya [this message]
2012-02-03 20:55 ` Hagen Paul Pfeifer
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