From: "Dâniel Fraga" <fragabr@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "Ilpo Järvinen" <ilpo.jarvinen@helsinki.fi>,
"David Miller" <davem@davemloft.net>,
Netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround (fwd)
Date: Wed, 1 Oct 2008 17:46:37 -0300 [thread overview]
Message-ID: <48e3e1b1.0807c00a.62bc.2b32@mx.google.com> (raw)
In-Reply-To: <alpine.LFD.1.10.0810012140360.5549@apollo.tec.linutronix.de>
On Wed, 1 Oct 2008 22:05:09 +0200 (CEST)
Thomas Gleixner <tglx@linutronix.de> wrote:
> Lots of things related to timers changed over the last kernel
> versions, but the big changes were 2.6.21 for 32bit and 2.6.24 for
> 64bit, where the high resolution timer were enabled. Since then we
> have only bigfixes and improvements in the timer related code. 2.6.25
> has no fundamental changes in the timer code at all.
>
> I think your observation vs. ntpd and hrtimer is just a red
> herring. It influences the visibility of the problem by shifting
> timings around, but it does not pinpoint them as the root cause.
>
> I might be wrong as usual, but in that case I insist on "in dubio pro
> reo". :)
Ok :) I understand your point ;).
> One possibility to get deeper insight into this problem is to use the
> function tracer and stop it once we notice the wreckage.
> listenoverflow should be a good point to stop it.
Ok. I'll do it and return the results.
[*] Kernel Function Tracer
Thank you very much! :)
Ps: if we figure it out soon, maybe we can solve this before
2.6.27 final release since Linus said that rc8 would be the last one.
--
next prev parent reply other threads:[~2008-10-01 20:46 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-01 12:52 [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround (fwd) Ilpo Järvinen
2008-10-01 16:27 ` Dâniel Fraga
2008-10-01 20:05 ` Thomas Gleixner
2008-10-01 20:46 ` Dâniel Fraga [this message]
2008-10-01 21:14 ` Dâniel Fraga
2008-10-02 10:42 ` Thomas Gleixner
2008-10-02 11:17 ` Dâniel Fraga
2008-10-02 12:08 ` Thomas Gleixner
2008-10-02 14:09 ` Dâniel Fraga
2008-10-02 19:16 ` Thomas Gleixner
2008-10-02 20:31 ` Ilpo Järvinen
2008-10-02 20:59 ` Dâniel Fraga
2008-10-02 21:19 ` Ilpo Järvinen
2008-10-02 21:39 ` Dâniel Fraga
2008-10-05 17:52 ` Dâniel Fraga
2008-10-05 18:09 ` Thomas Gleixner
2008-10-05 19:31 ` Dâniel Fraga
2008-10-06 1:27 ` Dâniel Fraga
2008-10-08 19:34 ` Dâniel Fraga
2008-10-08 19:56 ` Thomas Gleixner
2008-10-08 20:44 ` Ilpo Järvinen
2008-10-10 4:20 ` Dâniel Fraga
2008-10-10 8:10 ` Thomas Gleixner
2008-10-11 8:27 ` Ilpo Järvinen
2008-10-11 13:38 ` Dâniel Fraga
2008-10-13 4:08 ` Dâniel Fraga
2008-10-13 13:35 ` Ilpo Järvinen
2008-10-13 18:32 ` Dâniel Fraga
2008-10-13 18:48 ` Nicolas Cannasse
2008-10-17 23:51 ` Dâniel Fraga
2008-10-20 21:48 ` Ilpo Järvinen
2008-10-20 21:49 ` Ilpo Järvinen
2008-10-22 2:12 ` Dâniel Fraga
2008-10-30 10:43 ` Ilpo Järvinen
2008-10-30 18:16 ` Dâniel Fraga
2008-11-02 5:56 ` [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround (fwd) [SOLVED] Dâniel Fraga
2008-11-03 15:37 ` Ilpo Järvinen
2008-11-03 17:03 ` Dâniel Fraga
2008-10-02 20:56 ` [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround (fwd) Dâniel Fraga
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