On 3-Feb-07, at 10:46 PM, Izumi Tsutsui wrote:

> jmarin@embedtronics.fi wrote:
>
>> I applied the patch today and built a new kernel from the -current  
>> sources
>> of today.  Unfortunately, the patch doesn't seem to fix the problem.
>> When accessing two NFS servers simultaneously, packet reception stops
>> every now and then for about 30 seconds at a time.
>
> Hmm, I'm afraid it's difficult to debug it only by code inspection,
> but could you check which TX or RX could cause problem (by ttcp etc.)
> and interrupt/network statistics during stall (by vmstat -i or
> netstat -i etc.)?
>
> If FreeBSD or OpenBSD have the similar problem, maybe
> we need chip docs (there are several magic in the source).

Not sure if it's related, but you might want to have a look at the  
DragonFly modifications to the nfe driver to prevent watchdog timeouts:

http://www.dragonflybsd.org/cvsweb/src/sys/dev/netif/nfe/if_nfe.c? 
rev=1.1&content-type=text/x-cvsweb-markup

Cheers,
Jared