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Revision as of 17:05, 30 January 2013 by Acme (Talk | contribs)

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Perf tools

  • Factorize the multidimensional sorting between perf report and annotate (will be used by perf trace)
  • Implement a perf cmp (profile comparison between two (DONE, its called 'perf diff')
  • Implement a perf view (GUI)
  • Enhance perf trace:
    • Handle the cpu field
    • Handle the timestamp
    • Use the in-perf ip -> symbol resolving
    • Use the in-perf pid -> cmdline resolving
    • Implement multidimensional sorting by field name
  • The feature tests performed only when a file that needs those tests, or at least only when some .c or .h file will be rebuilt
  • Packages needed for the build should be checked before we start building object files, such as bison (bpetkov)
  • Use the highest precision level available by default, e.g.: cycles:pp
  • Use Kconfig to allow selecting features and build minimal version of perf, e.g. one with just 'record' for use in embedded platforms.
    • David Ahern prototyped this, dig those patches and update them.
  • Make the instruction augmentation in the annotate browser platform specific.
    • Right now they are x86 specific but are in the common code.
  • Cherry pick the plugin support in libtraceevent.
  • Add build id support in PERF_RECORD_MMAP, so that we can support long running sessions where update of components may take place.
  • Limit the size of the build id cache (~/.debug), in a way similar to how ccache manages its cache.
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