blog/data/2016-11-13-coz-profiler.txt

   1 Title: Coz profiler for multi-threaded software is now in Debian
   2 Tags: english, debian
   3 Date: 2016-11-13 12:30
   4
   5 <p><a href="http://coz-profiler.org/">The Coz profiler</a>, a nice
   6 profiler able to run benchmarking experiments on the instrumented
   7 multi-threaded program, finally
   8 <a href="https://tracker.debian.org/pkg/coz-profiler">made it into
   9 Debian unstable yesterday</A>.  Lluís Vilanova and I have spent many
  10 months since
  11 <a href="http://people.skolelinux.org/pere/blog/Coz_can_help_you_find_bottlenecks_in_multi_threaded_software___nice_free_software.html">I
  12 blogged about the coz tool</a> in August working with upstream to make
  13 it suitable for Debian.  There are still issues with clang
  14 compatibility, inline assembly only working x86 and minimized
  15 JavaScript libraries.</p>
  16
  17 <p>To test it, install 'coz-profiler' using apt and run it like this:</p>
  18
  19 <p><blockquote>
  20 <tt>coz run --- /path/to/binary-with-debug-info</tt>
  21 </blockquote></p>
  22
  23 <p>This will produce a profile.coz file in the current working
  24 directory with the profiling information.  This is then given to a
  25 JavaScript application provided in the package and available from
  26 <a href="http://plasma-umass.github.io/coz/">a project web page</a>.
  27 To start the local copy, invoke it in a browser like this:</p>
  28
  29 <p><blockquote>
  30 <tt>sensible-browser /usr/share/coz-profiler/viewer/index.htm</tt>
  31 </blockquote></p>
  32
  33 <p>See the project home page and the
  34 <a href="https://www.usenix.org/publications/login/summer2016/curtsinger">USENIX
  35 ;login: article on Coz</a> for more information on how it is
  36 working.</p>