em watchdog timeout

Bradley W. Dutton brad-fbsd-stable at duttonbros.com
Thu Dec 14 15:55:40 PST 2006


Hi,

I'm still seeing watchdog timeouts on my em card using stable from Nov 28.
Before the flurry of messages/activity about this last month I never had
any timeout problems, they only started occurring after the em changes
were committed in November. Generally when the timeout occurs everything
hangs for a bit (30-60 seconds maybe?), then resumes normal activity.
Please let me know what I can do to help.

Thanks,
Brad


# the log file starts on the morning of the 11th
root at backup[/var/log][119]% grep -i watchdog messages
Dec 11 11:38:49 backup kernel: em0: watchdog timeout -- resetting
Dec 11 12:07:03 backup kernel: em0: watchdog timeout -- resetting
Dec 11 19:35:26 backup kernel: em0: watchdog timeout -- resetting
Dec 11 20:33:07 backup kernel: em0: watchdog timeout -- resetting
Dec 11 23:03:35 backup kernel: em0: watchdog timeout -- resetting
Dec 12 06:06:58 backup kernel: em0: watchdog timeout -- resetting
Dec 12 14:05:28 backup kernel: em0: watchdog timeout -- resetting
Dec 12 19:02:12 backup kernel: em0: watchdog timeout -- resetting
Dec 12 19:06:43 backup kernel: em0: watchdog timeout -- resetting
Dec 12 20:02:46 backup kernel: em0: watchdog timeout -- resetting
Dec 12 20:03:54 backup kernel: em0: watchdog timeout -- resetting
Dec 12 21:15:37 backup kernel: em0: watchdog timeout -- resetting
Dec 12 23:05:24 backup kernel: em0: watchdog timeout -- resetting
Dec 13 01:38:36 backup kernel: em0: watchdog timeout -- resetting
Dec 13 02:35:26 backup kernel: em0: watchdog timeout -- resetting
Dec 13 11:37:27 backup kernel: em0: watchdog timeout -- resetting
Dec 13 19:47:56 backup kernel: em0: watchdog timeout -- resetting
Dec 13 20:29:45 backup kernel: em0: watchdog timeout -- resetting
Dec 13 23:35:00 backup kernel: em0: watchdog timeout -- resetting
Dec 14 06:35:40 backup kernel: em0: watchdog timeout -- resetting

root at backup[/var/log][120]% uname -a
FreeBSD backup 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #0: Tue Nov 28
17:52:48 PST 2006     root at backup:/home/obj/usr/src/sys/BACKUP  i386

- debug.mpsafenet is already 0 because I have ipsec enabled.
- I'm using PF/altq
- Polling is compiled into the kernel but not enabled, HZ=1000
- em0 is a PCI card, not on board, with jumbo frames enabled. This
interface is transferring between 20-80Mbit/sec 24hours/day.
- I have vr0 on board (cable internet connection, light traffic) and a 4
port sis pci card that has some light traffic.




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