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[Perf] Regressions in System.Tests.Perf_Random #51257
Description
Run Information
| Architecture | x64 |
|---|---|
| OS | ubuntu 18.04 |
| Baseline | 624a8349de1efc4b9504c8d7ba08c2b175d8bb98 |
| Compare | ee32ee2240f5771f9cf162695d110c2adccc5107 |
| Diff | Diff |
Regressions in System.Tests.Perf_Random
| Benchmark | Baseline | Test | Test/Base | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL |
|---|---|---|---|---|---|---|---|---|
| Next_long_unseeded | 5.01 ns | 6.05 ns | 1.21 | |||||
| Next_long | 103.73 ns | 110.00 ns | 1.06 | |||||
| NextDouble | 9.60 ns | 11.07 ns | 1.15 | |||||
| NextBytes_span | 7.54 μs | 8.08 μs | 1.07 |
Historical Data in Reporting System
Repro
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f netcoreapp5.0 --filter 'System.Tests.Perf_Random*'Details
Payloads
Histogram
System.Tests.Perf_Random.Next_long_unseeded
System.Tests.Perf_Random.Next_long
System.Tests.Perf_Random.NextBytes_unseeded
System.Tests.Perf_Random.NextDouble
System.Tests.Perf_Random.NextBytes_span
Docs
Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository
Activity
DrewScoggins commentedon Apr 14, 2021
Seems related to #50922
dotnet-policy-service commentedon Jan 11, 2026
Due to lack of recent activity, this issue has been marked as a candidate for backlog cleanup. It will be closed if no further activity occurs within 14 more days. Any new comment (by anyone, not necessarily the author) will undo this process.
This process is part of our issue cleanup automation.
dotnet-policy-service commentedon Jan 25, 2026
This issue will now be closed since it had been marked
no-recent-activitybut received no further activity in the past 14 days. It is still possible to reopen or comment on the issue, but please note that the issue will be locked if it remains inactive for another 30 days.