kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

[Sergio Monteiro Basto]

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Hi, 
kernel-rt-14 rocks but wiht kernel-rt-15 I got kernel: NETDEV WATCHDOG:
eth1: transmit timed out, I downgrade to kernel-rt-14 and that got this
problem anymore.

I not use my on-board via-rhine II Ethernet. 
This tests has been made with one external Ethernet card, one Realtek
Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

kernel-rt-14 without notsc option and boot clean, don't have any oops
anymore.

Thanks,
-- 
Sérgio M.B.

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Re: kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

[Sergio Monteiro Basto]

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After many hours of stressing network I could reproduce once NETDEV
WATCHDOG: eth1: transmit timed out on rt-14, but is not so frequently as
on rt15. I just reproduce one time on rt14 with many many stress, on
rt15 is much more frequently.


On Sun, 2006-12-17 at 00:20 +0000, Sergio Monteiro Basto wrote:
> Hi, 
> kernel-rt-14 rocks but wiht kernel-rt-15 I got kernel: NETDEV WATCHDOG:
> eth1: transmit timed out, I downgrade to kernel-rt-14 and that got this
> problem anymore.
> 
> I not use my on-board via-rhine II Ethernet. 
> This tests has been made with one external Ethernet card, one Realtek
> Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
> 
> kernel-rt-14 without notsc option and boot clean, don't have any oops
> anymore.
> 
> Thanks,
-- 
Sérgio M.B.

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Re: kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

[Dirk Behme]

Sergio Monteiro Basto wrote:
> Hi, 
> kernel-rt-14 rocks but wiht kernel-rt-15 I got kernel: NETDEV WATCHDOG:
> eth1: transmit timed out, I downgrade to kernel-rt-14 and that got this
> problem anymore.
> 
> I not use my on-board via-rhine II Ethernet. 
> This tests has been made with one external Ethernet card, one Realtek
> Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

Which driver (file) is used for this? As already mentioned 
here, I have same issue with smc91x.c on embedded ARM based 
board. Unfortunately, I get this with various -rtx and not 
only the recent ones. Maybe this isn't a 
driver/board/processor specific issue?

Dirk

Re: kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

[Ingo Molnar]

* Dirk Behme <dirk.behme@googlemail.com> wrote:

> Sergio Monteiro Basto wrote:
> >Hi, 
> >kernel-rt-14 rocks but wiht kernel-rt-15 I got kernel: NETDEV WATCHDOG:
> >eth1: transmit timed out, I downgrade to kernel-rt-14 and that got this
> >problem anymore.
> >
> >I not use my on-board via-rhine II Ethernet. 
> >This tests has been made with one external Ethernet card, one Realtek
> >Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
> 
> Which driver (file) is used for this? As already mentioned here, I 
> have same issue with smc91x.c on embedded ARM based board. 
> Unfortunately, I get this with various -rtx and not only the recent 
> ones. Maybe this isn't a driver/board/processor specific issue?

that should be drivers/net/8139too.c. It does seem to be spurious and 
indeed longstanding. Either -rt exposes some driver level race or 
perhaps it triggers some net-tx/net-rx softirq processing 
problem/incompatibility?

	Ingo

Re: kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

[Sergio Monteiro Basto]

On Wed, 2006-12-20 at 17:18 +0100, Ingo Molnar wrote:
> that should be drivers/net/8139too.c.

yes, is one 8139too kernel module that is loaded 

Thanks,
--
Sérgio M. B. 

Re: kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

[Dirk Behme]

Sergio Monteiro Basto wrote:
> On Wed, 2006-12-20 at 17:18 +0100, Ingo Molnar wrote:
> 
>>that should be drivers/net/8139too.c.
> 
> yes, is one 8139too kernel module that is loaded 

On LKML there was a discussion about

http://www.ussg.iu.edu/hypermail/linux/kernel/0612.1/0642.html

which seems to be necessary at the moment for embedded ARM 
based OMAP.

Sérgio: Maybe it's worth a try for your issue as well?

Dirk

Re: kernel-rt-15 give NETDEV WATCHDOG: eth1: transmit timed out

[Sergio Monteiro Basto]

Hi ,

I am thinking write to you to say 2 things:

1 - That a have a similar with via-rhine II  on-board Ethernet,
therefore I try this 8139too PCI.
2 - I can get this problem quicker when I enable other devices that use
interrupts massively, like usbnet or nvidia dri.



On Thu, 2006-12-21 at 08:33 +0100, Dirk Behme wrote:
> Sergio Monteiro Basto wrote:
> > On Wed, 2006-12-20 at 17:18 +0100, Ingo Molnar wrote:
> > 
> >>that should be drivers/net/8139too.c.
> > 
> > yes, is one 8139too kernel module that is loaded 
> 
> On LKML there was a discussion about
> 
> http://www.ussg.iu.edu/hypermail/linux/kernel/0612.1/0642.html
> 
> which seems to be necessary at the moment for embedded ARM 
> based OMAP.
> 
> Sérgio: Maybe it's worth a try for your issue as well?

Sure I will try that patch .

Thanks,
--
Sérgio M. B.