> > > > For x86-64, the needed APIC is always compiled in, and the NMI > > > watchdog is always enabled with I/O-APIC mode (nmi_watchdog=1). > > > Currently, local APIC mode (nmi_watchdog=2) does not work on x86-64. > > > > > > Is this no longer true? My experience with nmi_watchdog=2 and this LTP > > > openposix sched_yeild 1-1.test is that this test hardlocks the host and > > > that no watchdog is triggered with this setting. > > > > It looks like it should work .. I'd be surprised if it didn't work.. You > > can check if it's ticking in /proc/interrupts under NMI (it stops when > > the system is idle tho) > > well... i've got counts - but like i said earlier it doesn't catch the > LOCKUP when the LTP test hardlocks the host. > I haven't had much luck with nmi_watchdog=2 on x86_64. Usually I get a few, but they seem to stop coming in at a regular basis. nmi_watchdog=1 usually slams my system with nmis (1000HZ). But I haven't had lockups. I'll look into this when I get a chance. (please CC me, so I remember ;-) Wont be till earliest Monday. -- Steve - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
