benchstat-prof report

You must ensure benchmark code, inputs, and configuration are identical in the baseline and comparison. Benchmark definitions are not verified.

Baseline

8778a351f34cdc8c7cc520bf2a7726b625ca40c8
8778a351f34cdc8c7cc520bf2a7726b625ca40c8
Worktree: Clean

Comparison

HEAD
90c22d855a1c318a5f797080b7938dc82915d46c
Worktree: Clean

Node info

christian-m5.local (darwin/arm64)
CPU: Apple M5 Pro
18 logical CPUs

Worker run (UTC)

Started: 2026-10-12 16:13:09 UTC
Finished: 2026-10-12 16:13:39 UTC
Elapsed: 31s

Benchstat compares unprofiled benchmark repetitions. Profiles are collected in a separate run for each individual benchmark and CPU configuration. CPU values are total sampled CPU time (including startup and calibration; capture durations can differ); allocation values are sampled bytes allocated over the process lifetime, scaled in powers of 1024. Profile changes are not statistical tests. This report embeds all profiles and can be opened directly from disk.

Overview

name                  old time/op    new time/op    delta
QuickSort/duplicates    88.1µs ± 1%     4.9µs ± 1%  -94.48%  (p=0.000 n=10+10)

name                  old items/op   new items/op   delta
QuickSort/duplicates     2.05k ± 0%     2.05k ± 0%     ~     (all equal)

name                  old alloc/op   new alloc/op   delta
QuickSort/duplicates    16.4kB ± 0%    16.4kB ± 0%     ~     (all equal)

name                  old allocs/op  new allocs/op  delta
QuickSort/duplicates      1.00 ± 0%      1.00 ± 0%     ~     (all equal)

name              old time/op    new time/op    delta
QuickSort/random    18.6µs ± 3%    19.8µs ±11%  +6.55%  (p=0.001 n=8+9)

name              old items/op   new items/op   delta
QuickSort/random     2.05k ± 0%     2.05k ± 0%    ~     (all equal)

name              old alloc/op   new alloc/op   delta
QuickSort/random    16.4kB ± 0%    16.4kB ± 0%    ~     (all equal)

name              old allocs/op  new allocs/op  delta
QuickSort/random      1.00 ± 0%      1.00 ± 0%    ~     (all equal)

name               old time/op    new time/op    delta
QuickSort/reverse     568µs ± 1%      10µs ± 1%  -98.24%  (p=0.000 n=10+10)

name               old items/op   new items/op   delta
QuickSort/reverse     2.05k ± 0%     2.05k ± 0%     ~     (all equal)

name               old alloc/op   new alloc/op   delta
QuickSort/reverse    16.4kB ± 0%    16.4kB ± 0%     ~     (all equal)

name               old allocs/op  new allocs/op  delta
QuickSort/reverse      1.00 ± 0%      1.00 ± 0%     ~     (all equal)

name              old time/op    new time/op    delta
QuickSort/sorted     667µs ± 1%      10µs ± 1%  -98.48%  (p=0.000 n=10+10)

name              old items/op   new items/op   delta
QuickSort/sorted     2.05k ± 0%     2.05k ± 0%     ~     (all equal)

name              old alloc/op   new alloc/op   delta
QuickSort/sorted    16.4kB ± 0%    16.4kB ± 0%     ~     (all equal)

name              old allocs/op  new allocs/op  delta
QuickSort/sorted      1.00 ± 0%      1.00 ± 0%     ~     (all equal)