Results
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 15/100
- Issue type
- Documentation
- Clarity
- Needs clarification
- Activity status
- Quiet
- Domain
- performance
Research direction
The issue contains benchmark results for JDK 25 and JDK 27 on an M1 MacBook Pro, including default and -Xms32m runs. No repository file, test, or entry point is named, and the issue does not define a change or acceptance criteria. Clarify whether the results should be documented, investigated, or used to create a benchmark regression test before starting.
Written by the indexing model from the issue text.
Description
An issue to share results.
On my MacBook Pro M1, at commit 7b967ffe999f26cf2d8bd9783ad9574a120fafe1 using OpenJDK 64-Bit Server VM (build 25.0.3+11-LTS, mixed mode, sharing) and OpenJDK 64-Bit Server VM (build 27-ea+23-2078, mixed mode, sharing).
With otherwise default command-line options
========================================
Running benchmarks for JDK 25
========================================
openjdk version "25.0.3" 2026-04-21 LTS
OpenJDK Runtime Environment (build 25.0.3+11-LTS)
OpenJDK 64-Bit Server VM (build 25.0.3+11-LTS, mixed mode, sharing)
Preparing AOT cache for JDK 25 (No COH)...
Preparing AOT cache for JDK 25 (With COH)...
Run 1/10... Done
Run 2/10... Done
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========================================
Running benchmarks for JDK 27
========================================
openjdk version "27-ea" 2026-09-15
OpenJDK Runtime Environment (build 27-ea+23-2078)
OpenJDK 64-Bit Server VM (build 27-ea+23-2078, mixed mode, sharing)
Preparing AOT cache for JDK 27 (No COH)...
Preparing AOT cache for JDK 27 (With COH)...
Run 1/10... Done
Run 2/10... Done
Run 3/10... Done
Run 4/10... Done
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========================================
Summary of runs
========================================
Configuration RSS (MB) Avg [Min, Max] Startup (ms) Avg [Min, Max]
----------------------------------------------------------------------------------------
JDK 25 (AOT=false, COH=false) 150.70 [149, 155] 1015.80 [955, 1062]
JDK 25 (AOT=false, COH=true) 149.90 [149, 153] 1011.50 [952, 1060]
JDK 25 (AOT=true, COH=false) 117.50 [114, 120] 334.60 [293, 409]
JDK 25 (AOT=true, COH=true) 120.80 [118, 122] 322.80 [289, 352]
JDK 27 (AOT=false, COH=false) 182.10 [178, 189] 1010.00 [938, 1108]
JDK 27 (AOT=false, COH=true) 183.50 [179, 187] 1052.30 [934, 1280]
JDK 27 (AOT=true, COH=false) 122.90 [120, 125] 350.30 [313, 422]
JDK 27 (AOT=true, COH=true) 126.00 [124, 128] 357.60 [331, 459]
- With defaults (COH, no AOT), RSS increases from 151 MB to 182 MB (20.5%) from JDK 25 to 27 EA b23
With `-Xms32m`
========================================
Running benchmarks for JDK 25
========================================
openjdk version "25.0.3" 2026-04-21 LTS
OpenJDK Runtime Environment (build 25.0.3+11-LTS)
OpenJDK 64-Bit Server VM (build 25.0.3+11-LTS, mixed mode, sharing)
Preparing AOT cache for JDK 25 (No COH)...
Preparing AOT cache for JDK 25 (With COH)...
Run 1/10... Done
Run 2/10... Done
Run 3/10... Done
Run 4/10... Done
Run 5/10... Done
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Run 10/10... Done
========================================
Running benchmarks for JDK 27
========================================
openjdk version "27-ea" 2026-09-15
OpenJDK Runtime Environment (build 27-ea+23-2078)
OpenJDK 64-Bit Server VM (build 27-ea+23-2078, mixed mode, sharing)
Preparing AOT cache for JDK 27 (No COH)...
Preparing AOT cache for JDK 27 (With COH)...
Run 1/10... Done
Run 2/10... Done
Run 3/10... Done
Run 4/10... Done
Run 5/10... Done
Run 6/10... Done
Run 7/10... Done
Run 8/10... Done
Run 9/10... Done
Run 10/10... Done
========================================
Summary of runs
========================================
Configuration RSS (MB) Avg [Min, Max] Startup (ms) Avg [Min, Max]
----------------------------------------------------------------------------------------
JDK 25 (AOT=false, COH=false) 150.90 [149, 154] 996.10 [967, 1035]
JDK 25 (AOT=false, COH=true) 149.30 [142, 156] 1040.10 [985, 1238]
JDK 25 (AOT=true, COH=false) 117.30 [115, 120] 308.20 [290, 325]
JDK 25 (AOT=true, COH=true) 120.90 [118, 122] 329.20 [301, 360]
JDK 27 (AOT=false, COH=false) 164.00 [153, 187] 1012.90 [958, 1046]
JDK 27 (AOT=false, COH=true) 164.20 [150, 190] 1019.80 [949, 1098]
JDK 27 (AOT=true, COH=false) 120.80 [120, 123] 339.50 [319, 401]
JDK 27 (AOT=true, COH=true) 119.10 [117, 123] 332.00 [301, 388]
- With
-Xms32mand otherwise defaults (COH, no AOT), RSS increases from 151 MB to 164 MB (8.6%) from JDK 25 to 27 EA b23
- Dominant language
- Shell
- Stars
- 0
- Forks
- 0
- PR merge metrics
- No merged PRs in 30d
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