neonene <nicesal...@gmail.com> added the comment:
3.10rc2 Python/ceval.c
1306: #define DISPATCH() \
1307: { \
1308: if (trace_info.cframe.use_tracing OR_DTRACE_LINE OR_LLTRACE) { \
1309: goto tracing_dispatch; \
Among the 44 pgo-tests, only test_patma.TestTracing hits the condition above.
On Windows, it seems that skipping it tightens the profile of PR28475 a bit.
Additional tests such as test_threading(.ThreadTests.test_frame_tstate_tracing)
might also cause some amount of variation or vice versa.
3.10rc2 x64 PGO : 1.00
+ PR28475
with TestTracing : 1.05x faster (slow 3, fast 46, same 9)
without : 1.06x faster (slow 5, fast 52, same 1)
with TestTracing : 1.00
without : 1.01x faster (slow 19, fast 27, same 12)
(Details: PR28475_skip1test_bench.txt)
Does test_patma.TestTracing need training for match-case performance?
----------
Added file: https://bugs.python.org/file50296/PR28475_skip1test_bench.txt
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<https://bugs.python.org/issue45116>
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