[ltt-dev] no metadata tracefile

[Mathieu Desnoyers]

* Ji Zhai (Ji.Zhai at ca.flextronics.com) wrote:
> Hi All,
> 
>  
> 
> Could you please give me any suggestions or hints?
> 
> Thanks in advance!
> 
>  
> 
> Ji
> 
>  
> 
> ________________________________
> 
> From: Ji Zhai [mailto:Ji.Zhai at ca.flextronics.com] 
> Sent: Wednesday, August 31, 2011 4:47 PM
> To: ltt-dev at lists.casi.polymtl.ca
> Subject: [ltt-dev] no metadata tracefile
> 
>  
> 
> Hi All,
> 
>  
> 
> As the restriction of the hardware and development environment, I am
> trying to use UST as the following combination:
> 
> 1. PowerPC 44x platform
> 
> 2. Linux kernel 2.6.31.12
> 
> 3. LTTng v0.170
> 
> 4. userspace RCU 0.4.6
> 
> 5. UST 0.6

Hi,

UST 0.6 is not supported anymore. Please upgrade.

Best regards,

Mathieu


> 
> 6. LTTV 0.12.20
> 
>  
> 
> I can get the kernel traces and use LTTV 0.12.20 to review them.
> 
> However, when I use the sample code from the "Section 3 Quick Start" of
> UST manual,
> 
>  
> #include <ust/marker.h>
>      
>      int main(int argc <http://en.wikipedia.org/wiki/Main_function> ,
> char **argv)
>      {
>         int v;
>         char *st;
>      
>         /* ... set values of v and st ... */
>      
>         /* a marker: */
>         trace_mark(ust, myevent, "firstarg %d secondarg %s", v, st);
>      
>         /* a marker without arguments: */
>         trace_mark(ust, myotherevent, MARK_NOARGS);
>      
>         return 0;
>      }
> 
>  
> 
> I got the errors by using LTTV 0.12.20:
> 
>  
> 
> ** (process:18957): WARNING **: Unsupported trace version : 2.6
> 
>  
> 
> ** (process:18957): WARNING **: parse_trace_header error
> 
>  
> 
> ** (process:18957): WARNING **: Unsupported trace version : 2.6
> 
>  
> 
> ** (process:18957): WARNING **: parse_trace_header error
> 
>  
> 
> ** (process:18957): WARNING **: Trace
> /nas/LTTng/mytrace/24407_5647013710766707006 has no metadata tracefile
> 
>  
> 
> ** (process:18957): CRITICAL **: cannot open trace .
> 
> /usr/local/bin/lttv: line 15: 18957 Segmentation fault      $0.real $*
> 
>  
> 
> From the mailing list, some guys said to use LTTV 0.12.30 or higher may
> solve this problem.
> 
>  
> 
> After run LTTV 0.12.32, I got:
> 
>  
> 
> ** ERROR **: Undescribed event 0 in channel ust
> 
> aborting...
> 
> /home/LTTng/bin/lttv: line 15: 19600 Aborted                 $0.real $*
> 
>  
> 
> So, I doubt that I may miss some key steps to configure the kernel for
> powerpc. The "UST" does not create the trace for me.
> 
> I'd like to get your suggestions. Thanks in advance!
> 
>  
> 
> Regards,
> 
>  
> 
> Ji
> 
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-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com