Non-maskable interrupt
Hi, everyone In my system, NMI intrrupt counter is increased continuously, which I found in /proc/interrupts. How can I find the reasons of NMI interrupts? Best Regards Kim.
On Thu, 23 Oct 2014 00:26:32 +0900, "J.Hwan Kim" said:
Hi, everyone
In my system, NMI intrrupt counter is increased continuously, which I found in /proc/interrupts. How can I find the reasons of NMI interrupts?
How fast are they increasing? A few an hour? A few a minute? 50 or 60 a second? What does 'grep -i nmi your-config-here' return?
2014년 10월 23일 02:37에 Valdis.Kletnieks@vt.edu 이(가) 쓴 글:
On Thu, 23 Oct 2014 00:26:32 +0900, "J.Hwan Kim" said:
Hi, everyone
In my system, NMI intrrupt counter is increased continuously, which I found in /proc/interrupts. How can I find the reasons of NMI interrupts? How fast are they increasing? A few an hour? A few a minute? once per second... and I found the nmi couter is same with PMI.
What does 'grep -i nmi your-config-here' return?
My kernel config about NMI is as follows : CONFIG_DEBUG_NMI_TIMEOUT=5 CONFIG_HAVE_FTRACE_NMI_ENTER=y CONFIG_FTRACE_NMI_ENTER=y Thanks
2014년 10월 23일 11:06에 Valdis.Kletnieks@vt.edu 이(가) 쓴 글:
On Thu, 23 Oct 2014 10:47:57 +0900, "J.Hwan Kim" said:
How fast are they increasing? A few an hour? A few a minute? once per second... I bet 'cat /proc/sys/kernel/nmi_watchdog' returns '1'.
See Documentation/lockup-watchdogs.txt In my kernel, there is no kernel paramter of nmi_watchdog and I cannot find the /proc/sys/kernel/nmi_watchdog file in my system.
On Thu, 2014-10-23 at 11:20 +0900, J.Hwan Kim wrote:
In my kernel, there is no kernel paramter of nmi_watchdog
Is CONFIG_HARDLOCKUP_DETECTOR not set in your .config?
and I cannot find the /proc/sys/kernel/nmi_watchdog file in my system.
Is CONFIG_LOCKUP_DETECTOR not set in your .config? Paul Bolle
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Valdis.Kletnieks＠vt.edu