[Top] [All Lists]

Re: FIN_WAIT1 / TCP_CORK / 2.2 -- reproducible bug and test case

To: James Morris <jmorris@xxxxxxxxxxxxxxxx>
Subject: Re: FIN_WAIT1 / TCP_CORK / 2.2 -- reproducible bug and test case
From: Martin Pool <mbp@xxxxxxxxx>
Date: Sat, 5 Oct 2002 17:51:59 +1000
Cc: netdev@xxxxxxxxxxx
In-reply-to: <Mutt.LNX.4.44.0210050053000.21202-100000@xxxxxxxxxxxxxxxxxxxxxxxxxx>
References: <Mutt.LNX.4.44.0210050053000.21202-100000@xxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mutt/1.4i
On  5 Oct 2002, James Morris <jmorris@xxxxxxxxxxxxxxxx> wrote:
> Martin,
> I'm not able to reproduce the bug exactly as described.  What kind of
> network connection were you using between the boxes, and what was the
> kernel version at the server end?  (I've been testing between two boxes on
> a 10Mbps lan, with 2.2.22 at the client side and both 2.2.20 and 2.4.19
> kernels at the server side).

The machine inside VMware is as shown below.  This was originally
reported by a distcc user who was apparently experiencing the problem
on diverse hardware on a 100Mbps switched network.

Did you see the example code that I posted at the start of the thread?

I can't reproduce it locally, but I can reproduce it going to a 2.4.18
machine across a 100Mbps switched network.  A tcpdump (complete?) is

mbp@maudlin:~$ lspci
00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (AGP 
disabled) (rev 01)
00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 08)
00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB
00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 08)
00:0f.0 VGA compatible controller: Unknown device 15ad:0405
00:10.0 SCSI storage controller: BusLogic BT-946C (BA80C30) [MultiMaster 10] 
(rev 01)
00:11.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet LANCE] 
(rev 10)

mbp@maudlin:~$ cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 1
model name      : Intel(R) Pentium(R) 4 CPU 1.70GHz
stepping        : 2
cpu MHz         : 1696.308
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
sep_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat 
pse36 cflush dtrace acpi mmx fxsr sse xmm2 ssnp 28 acc
bogomips        : 2929.45


Attachment: tcpdump_1050.txt
Description: Text document

<Prev in Thread] Current Thread [Next in Thread>