Vasiili Galchin wrote:
> I am trying to get oprofile running on Linux 2.6 (RedHat). Following is a
> cat of /proc/cpuinfo:
>
> processor : 0
>
> vendor_id : GenuineIntel
>
> cpu family : 15
>
> model : 4
>
> model name : Intel(R) Pentium(R) D CPU 2.66GHz
>
> stepping : 7
>
> cpu MHz : 2666.576
>
> cache size : 1024 KB
>
> physical id : 0
>
> siblings : 2
>
> core id : 0
>
> cpu cores : 2
>
> fpu : yes
>
> fpu_exception : yes
>
> cpuid level : 5
>
> wp : yes
>
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor
> ds_cpl tm2 cid cx16 xtpr
>
> bogomips : 5342.17
>
> clflush size : 64
>
> cache_alignment : 128
>
> address sizes : 36 bits physical, 48 bits virtual
>
> power management:
>
> processor : 1
>
> vendor_id : GenuineIntel
>
> cpu family : 15
>
> model : 4
>
> model name : Intel(R) Pentium(R) D CPU 2.66GHz
>
> stepping : 7
>
> cpu MHz : 2666.576
>
> cache size : 1024 KB
>
> physical id : 0
>
> siblings : 2
>
> core id : 1
>
> cpu cores : 2
>
> fpu : yes
>
> fpu_exception : yes
>
> cpuid level : 5
>
> wp : yes
>
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor
> ds_cpl tm2 cid cx16 xtpr
>
> bogomips : 5332.05
>
> clflush size : 64
>
> cache_alignment : 128
>
> address sizes : 36 bits physical, 48 bits virtual
>
> power management:
>
> When I try to do a "opcontrol --start", the kernel either hangs or crashes.
> I have peppered the oprofile "driver" code with printk's to try and isolate
> the problem. It is doing a bunch of default_open's and also calls to
> ulong_write_file. Any ideas how I can track this problem down?
>
> Regards, Bill
It would be useful to know what event or events are being set up on the
machine.
You can get this information from /root/.oprofile/daemonrc.
You can also put a "-x" at the end of the first line of the opcontrol script
and
see what what point in the script that things die.
If you are running the machine with a GUI such as KDE or gnome, it might be
wise to turn of the GUI, by changing the default runlevel in /etc/inittab to
use
level 3 rather than level 5 and see what output comes up on the screen.
Alternative use a serial console setup to capture the output on another machine.
-Will
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