"e100" ethernet driver problem in AC-1.0 and Centos-4.2

[Pasi Pirhonen]

Hi,


On Thu, Oct 20, 2005 at 06:19:47PM -0400, Jay Estabrook wrote:
> [The "e100" driver is used for Intel NIC chipsets 82557/8/9.]
> 
> The "e100" NIC driver in current AC-1.0 and Centos-4.2 kernels
> (2.6.11-1.1180axp_FC3 and 2.6.9-22.EC, respectively), has a problem
> with causing large numbers of kernel unaligned accesses.
> 
> Doing an NFS "Everything" install of AC-1.0 caused more than 10 million
> unaligned accesses from the "e100" driver. I'm expecting the NFS install
> of CentOS-4.2 to be roughly the same.
> 

I don't frankly remember anymore how it was with above AlphaCore
kernel, but there definetly is something funky going on with the
2.6.9-22.EC too. I don't see any unalligned access with it (as in
dmesg), but when there is heavy NFS-load (like install or when i do
move stuff between my ES45 and my NFS-server) there is these

NETDEV WATCHDOG: eth0: transmit timed out
e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex

eevery 15secs or so and the traffic just stops for few secs and starts
again.

My card being one of those compaq dual/quad (mine is dual) adapters.

0003:04:04.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 05)
0003:04:05.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 05)

This is something tagged with 'have to resolve sooner or later' in my
TODO-list.



-- 
Pasi Pirhonen - upi at iki.fi - http://iki.fi/upi/