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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Another logging passthrough surface that records the style of operations
performed trying to categorise what is slow/fast/important.
In combination with perf/cairo-analyse-trace it is very useful for
understanding what a trace does. The next steps for this tool would be
to identify the slow operations that the trace does. Baby steps.
This should be generally useful in similar situations outside of perf/
and should be extensible to become an online performance probe.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Add forgotten local targets to .gitignore
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In preparation to creating a new hub to control performance measuring
and reporting, move the current cairo-perf out of the way.
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Add a variant of cairo-perf that measures the time to replay traces.
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A minor variation on cairo-perf-diff-files that compares tests with the
same name for multiple backends.
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Generate a cairo-perf-diff graph for a series of commits in order to be
able to identify significant commits. Still very crude, but minimally
functional.
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Quick summary of changes:
- Move list of cairo source files out of src/Makefile.am and into
src/Sources.mk,
- Generate files src/Config.mk and src/Config.mk.win32 that choose
the right set of source files and headers based on configured
backends and features. This drastically simplifies building
using other build systems. The src/Makefile.win32 file needs
to be updated to reflect these changes.
- Add README files to various directories,
- Add toplevel HACKING file.
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Add .*.sw? (vim swapfiles).
Add *~ (backup files).
Add *.gcno and *.gcda (gcov intermediates).
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revisions.
The old cairo-perf-diff is now named cairo-perf-diff-files, but
the new one calls out to it and can still be used in an identical
way.
The new cairo-perf-diff can also be used to see what the performance
impact of a single commit is like so:
cairo-perf-diff HEAD
or between two commits:
cairo-perf-diff 1.2.4 HEAD
The script is careful to always run the latest cairo-perf program
even when testing old versions of the library. Also, the output
from any given performance run is cached so it gets less painful
to run as the cache gets primed (the cache is in .perf next to
.git).
The script is still a bit fragile in spots. In particular it depends
on cairo-perf being built in advance but doesn't do anythin to ensure
that happens.
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