From: John Sigler <linux.kernel@free.fr>
To: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org
Subject: NMI watchdog
Date: Fri, 12 Oct 2007 11:18:24 +0200 [thread overview]
Message-ID: <470F3BE0.4050807@free.fr> (raw)
Hello,
I'm experiencing a full system lockup. I'm using an out-of-tree driver
which I suspect is responsible. I'm trying to enable the NMI watchdog.
# cat /proc/version
Linux version 2.6.22.1-rt9 (gcc version 3.4.6) #1 PREEMPT RT Tue Oct 9
12:25:47 CEST 2007
# cat /proc/cmdline
ro root=/dev/hdc1 console=ttyS0,57600n8 console=tty0 panic=3 apic=debug
nmi_watchdog=2
However, after boot, the NMI count does not change.
# cat /proc/interrupts ; sleep 10 ; cat /proc/interrupts
CPU0
0: 99 IO-APIC-edge timer
4: 3822 IO-APIC-edge serial
8: 1 IO-APIC-edge rtc
9: 0 IO-APIC-fasteoi acpi
15: 16443 IO-APIC-edge ide1
16: 2166 IO-APIC-fasteoi eth0
17: 840 IO-APIC-fasteoi eth1
18: 840 IO-APIC-fasteoi eth2
19: 840 IO-APIC-fasteoi eth3
20: 0 IO-APIC-fasteoi Dta1xx
21: 0 IO-APIC-fasteoi Dta1xx
NMI: 2895
LOC: 168445
ERR: 0
MIS: 0
CPU0
0: 99 IO-APIC-edge timer
4: 3822 IO-APIC-edge serial
8: 1 IO-APIC-edge rtc
9: 0 IO-APIC-fasteoi acpi
15: 16467 IO-APIC-edge ide1
16: 2173 IO-APIC-fasteoi eth0
17: 845 IO-APIC-fasteoi eth1
18: 845 IO-APIC-fasteoi eth2
19: 845 IO-APIC-fasteoi eth3
20: 0 IO-APIC-fasteoi Dta1xx
21: 0 IO-APIC-fasteoi Dta1xx
NMI: 2895
LOC: 169448
ERR: 0
MIS: 0
Does this mean the NMI watchdog is not working correctly on my system?
# dmesg | grep NMI
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
Testing NMI watchdog ... OK.
Regards.
next reply other threads:[~2007-10-12 9:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-12 9:18 John Sigler [this message]
2007-10-12 10:00 ` NMI watchdog Björn Steinbrink
2007-10-12 10:58 ` John Sigler
2007-10-12 10:26 ` Steven Rostedt
2007-10-12 13:26 ` John Sigler
2007-10-12 16:12 ` Steven Rostedt
2007-10-17 12:20 ` John Sigler
2007-10-12 14:48 ` Arjan van de Ven
2007-10-15 16:05 ` John Sigler
-- strict thread matches above, loose matches on Subject: below --
2015-03-30 12:15 Justin Keller
2015-03-30 12:14 Justin Keller
2015-03-30 17:09 ` Michal Hocko
2009-01-29 23:54 David Miller
2003-11-14 10:12 NMI Watchdog Maciej Zenczykowski
2003-11-14 10:29 ` Mikael Pettersson
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