Re: I can not sample multiple events with 0.9.3 on X86_64!!

[Wenji Wu <we...@fn...>]

> > I got Linux 2.6.19, 2.6.20 installed on my system. Unfortunately, 
> this time
> > the counter 0 does not exist: there is no "/dev/oprofile/0". But I 
> can see
> > "/dev/oprofile/1". 
> > 
> > This problem is fixed in 2.6.23. But Linux 2.6.23 does not support 
> all the
> > drivers on my system. Do you have the latest patch for Linux 2.6.19 
> or
> > 2.6.20?
> 
> look like the problem with the nmi watchdog, try 
> 
> echo 0 > /proc/sys/kernel/nmi_watchdog
> opcontrol --deinit
> 
> then restart as usual, I'm unsure if it works with 2.6.19 but should 
> with .20
> 

Yes, it is the nmi_watchdog that cause the problem. I boot the kernel with nmi_watchdog=0, and it worked.

thanks,

wenji