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

From: Dâniel Fraga <[email-masked]>
Date: Sun, 5 Oct 2008 22:27:17 -0300

On Sun, 5 Oct 2008 20:09:22 +0200 (CEST)
Thomas Gleixner <[email-masked]> 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.

--