em0 issues with 4.10 + SMP

John Baldwin jhb at FreeBSD.org
Fri Jan 14 11:41:30 PST 2005

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.

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

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