bwn + BETA3/ppc = very unstable
Roman Bogorodskiy
novel at FreeBSD.org
Mon Oct 3 04:44:11 UTC 2011
Roman Bogorodskiy wrote:
> Adrian Chadd wrote:
>
> > There've been a few comments about bwn stability and performance when
> > running on ppc.
> > Unfortunately I don't have any ppc hardware that's suitable.
> >
> > The performance issue is likely due to endianness in some eeprom fiddling code.
> >
> > The illegal instruction? i'm not sure; can you please get a backtrace
> > from the debugger so we can see exactly where it's dying?
>
> Thanks for the info!
>
> I will try to get a backtrace.
>
> Unfortunately, keyboard for some reason stops working when kernel
> crashes, so I cannot get it online and also there's nothing in
> /var/crash (but it seems dumpdev and dumpdir are set correctly by
> default), so will need to figure out how to do it.
>
> Roman Bogorodskiy
Hm, I have applied a fix similar to this one:
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/ic/bwi.c.diff?r1=1.88;r2=1.89
I'm not sure if it's a coincidence or not, but I had no panics since
then. Packet loss rate are still very high - first packets go through
without losses, but eventually loss rate goes up.
Now uptime is 1 hour and loss rate is about 80-85%.
Any directions how can I debug this?
Roman Bogorodskiy
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