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Comparing candidate commit e846dfd in PR branch jwiriath/APMSP-3799-github-cache with baseline commit 7b8cb2a in branch main.
Found 0 performance improvements and 3 performance regressions! Performance is the same for 139 metrics, 0 unstable metrics.
Explanation
This is an A/B test comparing a candidate commit's performance against that of a baseline commit. Performance changes are noted in the tables below as:
🟩 = significantly better candidate vs. baseline
🟥 = significantly worse candidate vs. baseline
We compute a confidence interval (CI) over the relative difference of means between metrics from the candidate and baseline commits, considering the baseline as the reference.
If the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD), the change is considered significant.
Feel free to reach out to #apm-benchmarking-platform on Slack if you have any questions.
More details about the CI and significant changes
You can imagine this CI as a range of values that is likely to contain the true difference of means between the candidate and baseline commits.
CIs of the difference of means are often centered around 0%, because often changes are not that big:
---------------------------------(------|---^--------)-------------------------------->
-0.6% 0% 0.3% +1.2%
| | |
lower bound of the CI --' | |
sample mean (center of the CI) -------------' |
upper bound of the CI ----------------------'
As described above, a change is considered significant if the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD).
For instance, for an execution time metric, this confidence interval indicates a significantly worse performance:
----------------------------------------|---------|---(---------^---------)---------->
0% 1% 1.3% 2.2% 3.1%
| | | |
significant impact threshold --------------' | | |
lower bound of CI --------------' | |
sample mean (center of the CI) --------------------------' |
upper bound of CI ----------------------------------'
scenario:profile_add_sample_frames_x1000
🟥 execution_time [+163.315µs; +164.296µs] or [+4.003%; +4.027%]
🟥 execution_time [+18.227µs; +21.752µs] or [+6.087%; +7.264%]
🟥 throughput [-232931.100op/s; -195057.762op/s] or [-6.811%; -5.704%]
Benchmark execution time: 2026-07-31 14:34:58
Comparing candidate commit e846dfd in PR branch jwiriath/APMSP-3799-github-cache with baseline commit 7b8cb2a in branch main.
Found 9 performance improvements and 11 performance regressions! Performance is the same for 147 metrics, 10 unstable metrics.
Explanation
This is an A/B test comparing a candidate commit's performance against that of a baseline commit. Performance changes are noted in the tables below as:
🟩 = significantly better candidate vs. baseline
🟥 = significantly worse candidate vs. baseline
We compute a confidence interval (CI) over the relative difference of means between metrics from the candidate and baseline commits, considering the baseline as the reference.
If the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD), the change is considered significant.
Feel free to reach out to #apm-benchmarking-platform on Slack if you have any questions.
More details about the CI and significant changes
You can imagine this CI as a range of values that is likely to contain the true difference of means between the candidate and baseline commits.
CIs of the difference of means are often centered around 0%, because often changes are not that big:
---------------------------------(------|---^--------)-------------------------------->
-0.6% 0% 0.3% +1.2%
| | |
lower bound of the CI --' | |
sample mean (center of the CI) -------------' |
upper bound of the CI ----------------------'
As described above, a change is considered significant if the CI is entirely outside the configured SIGNIFICANT_IMPACT_THRESHOLD (or the deprecated UNCONFIDENCE_THRESHOLD).
For instance, for an execution time metric, this confidence interval indicates a significantly worse performance:
----------------------------------------|---------|---(---------^---------)---------->
0% 1% 1.3% 2.2% 3.1%
| | | |
significant impact threshold --------------' | | |
lower bound of CI --------------' | |
sample mean (center of the CI) --------------------------' |
upper bound of CI ----------------------------------'
scenario:alloc_free/system/4096
🟥 execution_time [+12.029ns; +12.160ns] or [+14.698%; +14.858%]
🟥 execution_time [+6.167ns; +6.228ns] or [+4.356%; +4.399%]
scenario:no_profiler/short_circuit/4096
🟥 execution_time [+9.773ns; +9.956ns] or [+10.499%; +10.696%]
scenario:profiler_attached/fast_path_system/4096
🟩 execution_time [-4.912ns; -4.755ns] or [-4.736%; -4.585%]
scenario:profiler_attached/slow_path_system/4096
🟩 execution_time [-26.973ns; -26.908ns] or [-17.363%; -17.321%]
scenario:trace_buffer/4_senders/no_delay
🟩 execution_time [-276.496µs; -240.566µs] or [-11.261%; -9.797%]
🟩 throughput [+160421.324op/s; +184367.918op/s] or [+10.924%; +12.554%]
Candidate
Omitted due to size.
Baseline
Omitted due to size.
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What does this PR do?
Add shared caching
Motivation
Have shared caching
Additional Notes
Ticket
How to test the change?
Dashboard