Hacktoberfest 2026：メンテナが10月に向けて印を付けた、オープンで初心者向けの issue。 Hacktoberfest の issue を見る

Results

オープン
  • 何か問題がありますか？
#1 コメント 2 件 リアクション 0 件 担当者 0 名 GitHub で見る

まだ誰も着手していません。

評価

難易度
5/5
見積もり時間
1週間以上
初心者へのやさしさ
15/100
issue の種類
ドキュメント
明瞭さ
説明が足りない
活発さ
静か
技術スタック
java, shell
領域
performance

調査の方向性

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.

索引モデルが issue の本文から書いたものです。

説明

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
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
========================================
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)   150.70 [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
Run 6/10... Done
Run 7/10... Done
Run 8/10... Done
Run 9/10... Done
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 -Xms32m and otherwise defaults (COH, no AOT), RSS increases from 151 MB to 164 MB (8.6%) from JDK 25 to 27 EA b23
主要言語
Shell
スター
0
フォーク
0
30日以内にマージされた PR はありません

環境構築

  • Dockerfile または Docker Compose ファイルあり
  • プルリクエストのテンプレートなし
  • コントリビューションガイドなし

はじめの一歩

  1. issue を最後まで読み、次にプロジェクトのコントリビューションガイドを読みます。
  2. 着手することを issue にコメントします — 二人が同じ作業をするのを防げます。
  3. リポジトリをフォークし、ブランチを切って変更します。
  4. issue 番号を参照したプルリクエストを送ります。

似ている issue

Shell/Bash の issue をもっと見る

新しい issue をメールで受け取る

初心者向けの GitHub issue を短くまとめたダイジェスト。