Gianfar tx-babbling-errors

[Haruki Dai-R35557]

Hi Scott,

 Is this your own board? If so, what PHY chip are you using? Are you
using the PHY driver?
 If the generic PHY driver is used and polling the MDIO periodically for
the link check, you may truncate the packet. I hope this is not the
case. 

Regards
Dai

> -----Original Message-----
> From: linuxppc-dev-bounces+dai.haruki=freescale.com at ozlabs.org
> [mailto:linuxppc-dev-bounces+dai.haruki=freescale.com at ozlabs.org] On
Behalf Of
> Scott Coulter
> Sent: Wednesday, February 18, 2009 10:16 AM
> To: linuxppc-dev at ozlabs.org
> Subject: Gianfar tx-babbling-errors
> 
> 
> Hi all,
> 
> As a simple stress test for my board with an MPC8572E and an MPC8568E
on
> it, I setup both processors to boot linux 2.6.27.6 with an NFS root
and
> then perform repeated native compiles of a linux kernel over NFS.
After
> running for 4 days straight or so with between 250-300 build cycles
per
> processor, I stopped the builds and ran ethtool to look for any odd
> statistics.  Both processors reported non-zero values for
> tx-babbling-errors.  Both processors reported around 1300
> tx-babbling-errors out of about 80,000,000 Tx packets.  Should I be
> concerned about the tx-babbling-errors?  What conditions would cause
> these errors to be reported?
> 
> Thanks,
> Scott
> 
> 
> 
> 
> 
> ___________________________________________________________________
> 
>   Scott N. Coulter
>   Senior Software Engineer
> 
>   Cyclone Microsystems
>   370 James Street              Phone:  203.786.5536 ext. 118
>   New Haven, CT 06513-3051      Email:  scott.coulter at cyclone.com
>   U.S.A.                        Web:    http://www.cyclone.com
> ___________________________________________________________________
> 
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