50 lines
1.2 KiB
Plaintext
50 lines
1.2 KiB
Plaintext
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Profiling Ardour with Callgrind
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===============================
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Prerequisites
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-------------
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* valgrind version 3.7.0 or later (current 3.9.0)
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* kcachegrind 0.6 or later (current: 0.7.4)
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Basic Profiling
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---------------
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1. Compile ardour with debug symbols [1].
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2. `cd gtk2_ardour`
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3. start ardour using `./arcall`
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Load a session, ideally use the 'Dummy' (non realtime) backend.
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The `arcall` script does not start profiling immediately,
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to start profiling, in a second terminal run
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4. `callgrind_control -i on`
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[do operations in Ardour that should be profiled]
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5. `callgrind_control -i off`
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6. quit ardour
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7. run `kcachegrind calgringd.out.<PID>`
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NB. There will be multiple files calgringd.out.<PID>-<Thread-ID> for every run,
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only load the main file without the dash into
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8. clean-up: `rm calgringd.out.*`
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Advanced Usage
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--------------
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Edit gtk2_ardour/arcall, add/remove options as needed.
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see http://valgrind.org/docs/manual/cl-manual.html for further information.
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---
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[1] ideally an optimized built with debug-symbols (-g) is used for profiling,
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however the ardour wscript does not yet offer that configuration option.
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However, a default (non optimized build) does contain debug-symbols.
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