Revision 03727e6a docs/tracing.txt

b/docs/tracing.txt
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    ./configure --trace-backend=simple
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    make
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2. Run the virtual machine to produce a trace file:


  		





  
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2. Create a file with the events you want to trace:


  		





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    qemu ... # your normal QEMU invocation


  		





  
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   echo bdrv_aio_readv   > /tmp/events


  		





  
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   echo bdrv_aio_writev >> /tmp/events


  		





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3. Pretty-print the binary trace file:


  		





  
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3. Run the virtual machine to produce a trace file:


  		





  
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    qemu -trace events=/tmp/events ... # your normal QEMU invocation


  		





  
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4. Pretty-print the binary trace file:


  		





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    ./simpletrace.py trace-events trace-*


  		





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