Re: [Dprobes] question on redirecting dprobes log to LTT

[S V. <vam...@in...>]

Sorry, here _is_ the command you could use to start the tracedaemon such
that it logs only the dprobes events:
% tracedaemon -eCSTM -eNEWEV -ts60 /dev/tracer out.trace out.proc

Hope this helps,

Regards.. Vamsi.

Vamsi Krishna S.
Linux Technology Center,
IBM Software Lab, Bangalore.
Ph: +91 80 5044959
Internet: vam...@in...

----- Forwarded by S Vamsikrishna/India/IBM on 02/26/02 01:20 PM -----
                                                                                                                                              
                    S Vamsikrishna                                                                                                            
                                         To:     tw...@pa...                                                                       
                    02/26/02 01:08       cc:     dp...@ww..., dpr...@ww..., lt...@sh...         
                    PM                   From:   S Vamsikrishna/India/IBM@IBMIN                                                               
                                         Subject:     Re: [Dprobes] question on redirecting dprobes log to LTT(Document link: S Vamsikrishna) 
                                                                                                                                              
                                                                                                                                              
                                                                                                                                              
                                                                                                                                              
                                                                                                                                              
                                                                                                                                              



DProbes events are logged in LTT trace buffer with the Event name as the
value specified for "name = " statement in the probe proram. For example,
if you have "name = vmlinux" in the rpn (or ppdf) file, then in the trace
buffer (in the output of tracedump or in traceview, search for "vmlinux"
events.

To log only DProbes events, you could start the tracedaemon with the
following options:

Regards.. Vamsi.

Vamsi Krishna S.
Linux Technology Center,
IBM Software Lab, Bangalore.
Ph: +91 80 5044959
Internet: vam...@in...



                                                                                                                                                   
                    Tina Wong                                                                                                                      
                    <twong@packetdesign       To:     dp...@ww..., lt...@sh...                                        
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                    02/26/02 07:36 AM                                                                                                              
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                    twong                                                                                                                          
                                                                                                                                                   
                                                                                                                                                   



Hi there,

I am a first-time user of dprobes. I built and applied
a ppdf on dprobes, and I can see the log records written
to /var/log/messages. Now I am trying to redirect the
log records to LTT, as the man page says it is possible.
I have installed LTT, and both the tracedaemon and the
tracevisualizer work perfectly. Would someone enlighten
me whether and how I can visualize the dprobes logs in
LTT?

I did the following:

% /usr/sbin/dprobes -p test.ppdf -l ALL --log-target LTT
ppdf applied successfully into /usr/src/linux/vmlinux

% <doing a bunch of "ls" as my test.ppdf is basically
   tracing do_fork>

% tracedaemon -ts60 /dev/tracer out.trace out.proc
TraceDaemon: Output file ready
TraceDaemon: Trace driver open
TraceDaemon: Trace buffers are 1000000 bytes
TraceDaemon: Fetching eip for syscall on depth : 0
TraceDaemon: Daemon wil run for : (60, 0)
TraceDaemon: Done mapping /proc

TraceDaemon: End of tracing

% /usr/src/TraceToolkit-0.9.5pre5/Visualizer/Scripts/traceview out

What should I look for in visualizer? I am pretty lost.

Thank you very much in advance.

Tina
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