Remove multi-threading support #93
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We have some limited support for doing DWARF parsing with multiple
threads in debug_info_parse_symbols(), but it is not currently used
anywhere but tests/benchmarks. I adjusted the resolver to use four
instead of only a single thread but performance of our end-to-end test
was unaffected:
dwarf/dwarf :: lookup_end_to_end
time: [38.452 ms 38.729 ms 39.055 ms]
change: [+0.4597% +1.5175% +2.5883%] (p = 0.00 < 0.02)
Change within noise threshold.
Found 50 outliers among 500 measurements (10.00%)
24 (4.80%) high mild
26 (5.20%) high severe
dwarf/dwarf :: symbolize_end_to_end
time: [7.8156 ms 7.8725 ms 7.9420 ms]
change: [-0.7813% +0.0273% +0.9428%] (p = 0.95 > 0.02)
No change in performance detected.
Found 43 outliers among 500 measurements (8.60%)
16 (3.20%) high mild
27 (5.40%) high severe
This change removes this multi-threaded code as it was not actually
usable by users and consumed an additional dependency. We can resurrect
it if truly needed, but APIs should likely be designed differently and
not spawn thread internally.
Signed-off-by: Daniel Müller <deso@posteo.net>
Codecov ReportPatch coverage:
Additional details and impacted files@@ Coverage Diff @@
## master #93 +/- ##
==========================================
- Coverage 68.84% 68.74% -0.11%
==========================================
Files 13 13
Lines 4260 4204 -56
==========================================
- Hits 2933 2890 -43
+ Misses 1327 1314 -13
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anakryiko
approved these changes
Mar 22, 2023
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We have some limited support for doing DWARF parsing with multiple threads in debug_info_parse_symbols(), but it is not currently used anywhere but tests/benchmarks. I adjusted the resolver to use four instead of only a single thread but performance of our end-to-end test was unaffected:
This change removes this multi-threaded code as it was not actually usable by users and consumed an additional dependency. We can resurrect it if truly needed, but APIs should likely be designed differently and not spawn threads internally.