em0 issues with 4.10 + SMP

[John Baldwin]

On Friday 14 January 2005 02:46 pm, Ross Kramer wrote:
> What if I downgrade to an earlier version of FreeBSD, like 4.9 or 4.7?
> Would I still be running into the same problems?

I am not sure.  If so, then it would perhaps indicate more of a driver bug 
than something in the interrupt code itself.

> More simply, what version of FreeBSD do you recommend? Is the latest 5.x
> stuff stable enough for production environments?

It is for some environments, but that is something you would need to test 
locally yourself as I'm sure there are environments that 5.x is not ready to 
handle yet.  It would be good to know if 5.x has the same problems with the 
network interfaces though, and a quick boot off of a CD can probably help 
determine that.

> On Fri, 2005-01-14 at 14:30 -0500, John Baldwin wrote:
> > On Friday 14 January 2005 02:02 pm, Ross Kramer wrote:
> > > On Fri, 2005-01-14 at 13:11 -0500, John Baldwin wrote:
> > > > On Friday 14 January 2005 12:57 pm, Ross Kramer wrote:
> > > > Try adding 'device uhci' and 'device usb' to your kernel so that the
> > > > USB controller (which shares the same IRQ) will probe.  It may be
> > > > that the USB controller is causing an interrupt storm of sorts,
> > > > though on 4.x that usually results in a hard hang.
> > >
> > > I tried enabling that in the config, rebuilt the kernel, installed it,
> > > and rebooted. em0 did the same thing again, but its ping times to the
> > > local network were in the 8000ms range, when it wasn't returning "Host
> > > down"... Any other suggestions?
> >
> > Hmm, not many for 4.x.  The interrupt code in 4 and 5 is quite different
> > now.
>
> ____________________________
> # Ross Kramer              #
> # Systems Administrator    #
> # Compete, Inc.            #
> # rkramer at compete.com      #
> #__________________________#
>
> Random quote:
>
> "Moral indignation is jealousy with a halo." --H.G. Wells

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org