Switch to Eclipse OpenJ9 (to gain performance)

.github/workflows/deployment-jdk-ea.yml

@@ -36,7 +36,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, buildjet-4vcpu-ubuntu-2204-arm]
-        jdk: [22]
+        jdk: [21]
         javafx: [23]
         include:
           - os: ubuntu-latest

.github/workflows/deployment.yml

@@ -188,21 +188,21 @@ jobs:
           --java-options --add-opens=javafx.controls/javafx.scene.control=org.jabref \
           --java-options --add-opens=javafx.controls/com.sun.javafx.scene.control=org.jabref
       - name: Build runtime image and installer (linux, Windows)
-        if: (matrix.os != 'macos-latest') && (steps.checksecrets.outputs.secretspresent == 'YES')
+        if: (matrix.os != 'macos-latest')
         shell: bash
         run: ./gradlew -i -PprojVersion="${{ steps.gitversion.outputs.AssemblySemVer }}" -PprojVersionInfo="${{ steps.gitversion.outputs.InformationalVersion }}" jpackage jlinkZip
       - name: Package application image (linux, Windows)
-        if: (matrix.os != 'macos-latest') && (steps.checksecrets.outputs.secretspresent == 'YES')
+        if: (matrix.os != 'macos-latest')
         shell: bash
         run: ${{ matrix.archivePortable }}
       - name: Rename files
-        if: (matrix.os != 'macos-latest') && (steps.checksecrets.outputs.secretspresent == 'YES')
+        if: (matrix.os != 'macos-latest')
         shell: pwsh
         run: |
           get-childitem -Path build/distribution/* | rename-item -NewName {$_.name -replace "${{ steps.gitversion.outputs.AssemblySemVer }}","${{ steps.gitversion.outputs.Major }}.${{ steps.gitversion.outputs.Minor }}"}
           get-childitem -Path build/distribution/* | rename-item -NewName {$_.name -replace "portable","${{ steps.gitversion.outputs.Major }}.${{ steps.gitversion.outputs.Minor }}-portable"}
       - name: Repack deb file for Debian
-        if: (matrix.os == 'ubuntu-latest') && (steps.checksecrets.outputs.secretspresent == 'YES')
+        if: (matrix.os == 'ubuntu-latest')
         shell: bash
         run: |
           cd build/distribution

build.gradle

@@ -55,7 +55,7 @@ java {
         // - .github/workflows/deployment-jdk-ea.yml#L53
         languageVersion = JavaLanguageVersion.of(21)
         // See https://docs.gradle.org/current/javadoc/org/gradle/jvm/toolchain/JvmVendorSpec.html for a full list
-        // vendor = JvmVendorSpec.AMAZON
+        vendor = JvmVendorSpec.IBM
     }
 }
 
@@ -656,6 +656,13 @@ jlink {
     addOptions('--strip-debug', '--compress', 'zip-6', '--no-header-files', '--no-man-pages')
     launcher {
         name = 'JabRef'
+
+        // -Xgcpolicy:balanced
+        // Use "balanced" policy, which should provide better application performance
+        // See for details https://www.eclipse.org/openj9/docs/gc/#balanced-policy
+        // -Xms220M
+        // Provide more than 8 MB initial heap size (defaults are listed at https://www.eclipse.org/openj9/docs/openj9_defaults/)
+        jvmArgs = ['-Xgcpolicy:balanced', '-Xms220M']
     }
 
     addOptions("--bind-services")