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perf: specialize cmp, const_eq, const_is_zero for small sizes
#561
Merged
Comparing
DaniPopes:dani/cmp-specialization
(
b89a765
) with
main
(
c147f59
)
CodSpeed Performance Gauge
+13%
Improvement
4
Untouched
382
Different runtime environments detected
Some benchmarks with significant performance changes were compared across different runtime environments, which may affect the accuracy of the results.
Learn more about regression causes
.
Benchmarks
Mode
CPU Simulation
Wall Time
Memory
Status
Improvement
Untouched
386 total
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
root/127/128/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+13%
9.7 ms
8.6 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
to/f64/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+11%
29.4 µs
26.4 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
to/f32/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+11%
29.2 µs
26.3 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
most_significant_bits/4096/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+11%
28.9 µs
26.1 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
root/2/128/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
4.7 ms
4.5 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
parse/hex/4096/zero
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
62.5 µs
59.6 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
parse/binary/4096/zero
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
62.5 µs
59.6 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
parse/decimal/4096/zero
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
62.5 µs
59.6 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
parse/octal/4096/zero
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+5%
62.5 µs
59.6 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
neg/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
72.9 µs
70 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
root/3/128/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
4.3 ms
4.2 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
root/5/128/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+4%
4.8 ms
4.7 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
inv_mod/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+3%
6.3 ms
6.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
sub/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+3%
96.1 µs
93.1 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
add/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+3%
96.1 µs
93.2 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
cmp/64
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+3%
108.2 µs
105.4 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
gt/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+2%
189.4 µs
185.2 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
ge/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+2%
189.4 µs
185.3 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
le/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+2%
189.4 µs
185.3 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
lt/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+2%
189.4 µs
185.3 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
log/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+2%
7.4 ms
7.2 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
log/64
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+2%
1.5 ms
1.4 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
reduce_mod/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+1%
578.3 µs
572.7 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
pow_mod/128
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+1%
2.4 ms
2.4 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
is_zero/4096
benches/bench.rs::benches::benches::group
CodSpeed Performance Gauge
+1%
4.1 µs
4.1 µs
1
2
3
4
5
...
16
Commits
Click on a commit to change the comparison range
Base
main
c147f59
+12.68%
perf: specialize Ord::cmp for small sizes
b89a765
1 month ago
by DaniPopes
© 2026 CodSpeed Technology
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