Re: System freezes after opcontrol --start

[Maynard J. <may...@us...>]

On 11/06/2012 01:34 PM, Heckel, Dan wrote:
> I am running into a system freeze after entering oprofile --start. I do not see any kernel oops message on the console.  This is under Fedora Core 9 with oprofile built as a module.  When I increased the count, it took slightly more time before the system locked up.

Dan, a system freeze is something we'd need kernel expertise to help with, so I'm pulling Robert into this conversation.
*Robert*, do you have any knowledge of system hangs with the platform Dan's on?

-Maynard

> 
>  
> 
> cat ~/.oprofile/daemonrc
> 
> SESSION_DIR=/var/lib/oprofile
> 
> CHOSEN_EVENTS_0=CPU_CLK_UNHALTED:10000000:0:1:1
> 
> NR_CHOSEN=1
> 
> SEPARATE_LIB=0
> 
> SEPARATE_KERNEL=0
> 
> SEPARATE_THREAD=0
> 
> SEPARATE_CPU=0
> 
> VMLINUX=/usr/src/redhat/BUILD/kernel-2.6.27/linux-2.6.27.i686/vmlinux
> 
> IMAGE_FILTER=
> 
> CPU_BUF_SIZE=0
> 
> CALLGRAPH=0
> 
> KERNEL_RANGE=c0401000,c064afc8
> 
> XENIMAGE=none
> 
>  
> 
> uname -a
> 
> Linux physim11 2.6.27.25-78.2.56.local.fc9.i686 #1 SMP Mon Nov 5 14:56:10 PST 2012 i686 i686 i386 GNU/Linux
> 
>  
> 
> cat /proc/cpuinfo
> 
> processor       : 0
> 
> vendor_id       : GenuineIntel
> 
> cpu family      : 6
> 
> model           : 26
> 
> model name      : Intel(R) Xeon(R) CPU           W3550  @ 3.07GHz
> 
> stepping        : 5
> 
> cpu MHz         : 3066.773
> 
> cache size      : 8192 KB
> 
> physical id     : 1
> 
> siblings        : 8
> 
> core id         : 0
> 
> cpu cores       : 4
> 
> apicid          : 16
> 
> initial apicid  : 16
> 
> fdiv_bug        : no
> 
> hlt_bug         : no
> 
> f00f_bug        : no
> 
> coma_bug        : no
> 
> fpu             : yes
> 
> fpu_exception   : yes
> 
> cpuid level     : 11
> 
> wp              : yes
> 
> flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr dca sse4_1 sse4_2 popcnt lahf_lm ida
> 
> bogomips        : 6133.54
> 
> clflush size    : 64
> 
> power management:
> 
> …
> 
>  
> 
> Anybody have any suggestions?
> 
>  
> 
> 
> 
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