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  • Committer: Suren A. Chilingaryan
  • Date: 2009-04-09 03:21:08 UTC
  • Revision ID: csa@dside.dyndns.org-20090409032108-w4edamdh4adrgdu3
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Development/debugging/profiling/google.txt
 
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 - Crashing on amd64 due to libunwind 0.98.x (0.99 is expected to fix problem
 
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 in the future)
 
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    ./configure --enable-frame-pointers
 
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    applications and _all_ system libraries should be compiled with 
 
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    -fno-omit-frame-pointer (yes system libraries as well, otherwise
 
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    nothing will work)
 
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 cpu profiler (pretending to support threads)
 
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    CPUPROFILE=/home/csa/cpu.profile LD_PRELOAD=/usr/lib/libprofiler.so
 
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 heap usage profiller and memory leak detector
 
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    HEAPCHECK=normal LD_PRELOAD=/usr/lib/libtcmalloc.so ls
 
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    HEAPPROFILE=/home/csa/cpu.profile LD_PRELOAD=/usr/lib/libtcmalloc.so ls
 
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 Visualising
 
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    pprof --text <application> <profile.file> 
 
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        * grpahical represntation (--ps --pdf --gv)
 
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        * supports  valgrind data
 
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    Format:
 
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        1) Direct memory use
 
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        2) Percentage of direct memory usage
 
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        3) Cummulative sum of second column (i.e. all lines above)
 
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        4) Memory use by function and all his callees
 
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        5) Percentage of memory usage of function + callees