netdev - Re: [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility workaround (fwd)

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Message-ID: <48e96979.0610c00a.5fcc.fffffdfd@mx.google.com>
Date:	Sun, 5 Oct 2008 22:27:17 -0300
From:	Dâniel Fraga <fragabr@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>,
	David Miller <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] tcp FRTO: in-order-only "TCP proxy" fragility
 workaround (fwd)

On Sun, 5 Oct 2008 20:09:22 +0200 (CEST)
Thomas Gleixner <tglx@...utronix.de> wrote:

> did you get the content of /debug/tracing/trace nevertheless ?
> 
> The cat /debug/tracing/tracing_enabled == 1 might be just a user space
> interface thingy.

	Hi Thomas, I added this one too (from my desktop):

http://www.abusar.org/ftrace/trace-desktop.txt.bz2

	I don't know if it will help, but if you could look the entries
generated by sudo and fetchnews, they were stalled. sudo has a lot of:

            sudo-1081  [01] 34460.250986: _spin_lock+0x4/0x20 <ffffffff80453754> <-sys_close+0x3b/0x100 <ffffffff8029e06b>
            sudo-1081  [01] 34460.250986: sys_close+0x14/0x100 <ffffffff8029e044> <-system_call_fastpath+0x16/0x1b <ffffffff8020bd1b>
            sudo-1081  [01] 34460.250987: _spin_lock+0x4/0x20 <ffffffff80453754> <-sys_close+0x3b/0x100 <ffffffff8029e06b>
            sudo-1081  [01] 34460.250987: sys_close+0x14/0x100 <ffffffff8029e044> <-system_call_fastpath+0x16/0x1b <ffffffff8020bd1b>
            sudo-1081  [01] 34460.250987: _spin_lock+0x4/0x20 <ffffffff80453754> <-sys_close+0x3b/0x100 <ffffffff8029e06b>
            sudo-1081  [01] 34460.250987: sys_close+0x14/0x100 <ffffffff8029e044> <-system_call_fastpath+0x16/0x1b <ffffffff8020bd1b>
            sudo-1081  [01] 34460.250987: _spin_lock+0x4/0x20 <ffffffff80453754> <-sys_close+0x3b/0x100 <ffffffff8029e06b>
            sudo-1081  [01] 34460.250988: sys_close+0x14/0x100 <ffffffff8029e044> <-system_call_fastpath+0x16/0x1b <ffffffff8020bd1b>
            sudo-1081  [01] 34460.250988: _spin_lock+0x4/0x20 <ffffffff80453754> <-sys_close+0x3b/0x100 <ffffffff8029e06b>

	I don't know if it's normal...

	Thank you.


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