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Version 1.47.0 runs slowly on Windows when opening Java projects, while version 1.46.0 only takes thirty seconds to complete the Java build process #4250

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Version 1.47.0 runs slowly on Windows when opening Java projects, while version 1.46.0 only takes thirty seconds to complete the Java build process#4250
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performance
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Mid November 2025

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@caozhiyuan
caozhiyuan
opened on Nov 13, 2025

Version 1.47.0 runs slowly when opening Java projects on Windows, while version 1.46.0 only takes about thirty seconds to complete the Java build status.
1.47.0.log

1.46.9.log

Activity

  1. caozhiyuan
    changed the title [-]Version 1.47.0 runs slowly when opening Java projects on Windows, while version 1.46.0 only takes about ten seconds to complete the Java build status.[/-] [+]Version 1.47.0 runs slowly on Windows when opening Java projects, while version 1.46.0 only takes thirty seconds to complete the Java build process[/+] on Nov 13, 2025

  2. fbricon commented on Nov 13, 2025

    @fbricon
    fbricon
    on Nov 13, 2025
    Collaborator

    Can you try the latest pre release?

  3. caozhiyuan commented on Nov 13, 2025

    @caozhiyuan
    caozhiyuan
    on Nov 13, 2025
    Author

    @fbricon redhat.java-1.48.2025111308-win32-x64 crashed

    Image

    this is log:

    {
  message: 'Removing old folder in globalStorage : 1.47.0',
  level: 'info',
  timestamp: '2025-11-13 17:03:56.343'
}
{
  message: "Use the JDK from 'java.jdt.ls.java.home' setting as the initial default project JDK.",
  level: 'info',
  timestamp: '2025-11-13 17:04:08.117'
}
{
  message: 'Starting Java server with: C:\\Program Files\\Java\\jdk-21\\bin\\java --add-modules=ALL-SYSTEM --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/sun.nio.fs=ALL-UNNAMED -Declipse.application=org.eclipse.jdt.ls.core.id1 -Dosgi.bundles.defaultStartLevel=4 -Declipse.product=org.eclipse.jdt.ls.core.product -Djava.import.generatesMetadataFilesAtProjectRoot=false -DDetectVMInstallationsJob.disabled=true -Dfile.encoding=utf8 -Xlog:disable -XX:+UseParallelGC -XX:GCTimeRatio=4 -Xmx3G -Xms1G -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -javaagent:c:\\Users\\xxxx\\.vscode\\extensions\\redhat.java-1.48.2025111308-win32-x64\\lombok\\lombok-1.18.39-4050.jar -jar c:\\Users\\xxxx\\.vscode\\extensions\\redhat.java-1.48.2025111308-win32-x64\\server\\plugins\\org.eclipse.equinox.launcher_1.7.100.v20251111-0406.jar -configuration c:\\Users\\xxxx\\AppData\\Roaming\\Code\\User\\globalStorage\\redhat.java\\1.48.2025111308\\config_ss_win -data c:\\Users\\xxxx\\AppData\\Roaming\\Code\\User\\workspaceStorage\\8eabefad355c1d2ca47714605d48d75d\\redhat.java\\ss_ws',
  level: 'info',
  timestamp: '2025-11-13 17:04:10.071'
}
{
  message: 'WARNING: Using incubator modules: jdk.incubator.vector\r\n',
  level: 'info',
  timestamp: '2025-11-13 17:04:10.889'
}
{
  message: 'Starting Java server with: C:\\Program Files\\Java\\jdk-21\\bin\\java --add-modules=ALL-SYSTEM --add-opens java.base/java.util=ALL-UNNAMED --add-opens java.base/java.lang=ALL-UNNAMED --add-opens java.base/sun.nio.fs=ALL-UNNAMED -Declipse.application=org.eclipse.jdt.ls.core.id1 -Dosgi.bundles.defaultStartLevel=4 -Declipse.product=org.eclipse.jdt.ls.core.product -Djava.import.generatesMetadataFilesAtProjectRoot=false -DDetectVMInstallationsJob.disabled=true -Dfile.encoding=utf8 -Xlog:disable -XX:+UseParallelGC -XX:GCTimeRatio=4 -Xmx3G -Xms1G -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -javaagent:c:\\Users\\xxxx\\.vscode\\extensions\\redhat.java-1.48.2025111308-win32-x64\\lombok\\lombok-1.18.39-4050.jar -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=c:\\Users\\xxxx\\AppData\\Roaming\\Code\\User\\workspaceStorage\\8eabefad355c1d2ca47714605d48d75d\\redhat.java -Daether.dependencyCollector.impl=bf -Djdt.core.sharedIndexLocation=C:\\\\jdt\\\\index -XX:+UnlockDiagnosticVMOptions -XX:+AllowArchivingWithJavaAgent -XX:+AutoCreateSharedArchive -XX:SharedArchiveFile=c:\\Users\\xxxx\\AppData\\Roaming\\Code\\User\\globalStorage\\redhat.java\\1.48.2025111308\\jdtls.jsa -jar c:\\Users\\xxxx\\.vscode\\extensions\\redhat.java-1.48.2025111308-win32-x64\\server\\plugins\\org.eclipse.equinox.launcher_1.7.100.v20251111-0406.jar -configuration c:\\Users\\xxxx\\AppData\\Roaming\\Code\\User\\globalStorage\\redhat.java\\1.48.2025111308\\config_win -data c:\\Users\\xxxx\\AppData\\Roaming\\Code\\User\\workspaceStorage\\8eabefad355c1d2ca47714605d48d75d\\redhat.java\\jdt_ws',
  level: 'info',
  timestamp: '2025-11-13 17:04:11.377'
}
{
  message: 'Error occurred during CDS dumping\n' +
    'CDS dumping does not support native JVMTI agent, name: C:\\Program Files\\SentinelOne\\Sentinel Agent 24.1.5.277\\SentinelJava64.dll\n',
  level: 'info',
  timestamp: '2025-11-13 17:04:11.565'
}

    SentinelOne is the company's security software

  4. caozhiyuan commented on Nov 13, 2025

    @caozhiyuan
    caozhiyuan
    on Nov 13, 2025
    Author

    @fbricon 1.47.0 on mac , works ok. it takes thirty seconds to complete the Java build process

  5. fbricon commented on Nov 13, 2025

    @fbricon
    fbricon
    on Nov 13, 2025
    Collaborator

    App CDS is automatically enabled for pre-releases. You can disable it with "java.jdt.ls.appcds.enabled":false

  6. caozhiyuan commented on Nov 13, 2025

    @caozhiyuan
    caozhiyuan
    on Nov 13, 2025
    Author

    @fbricon There are many exceptions, the logs are as follows

    pre.log

  7. caozhiyuan commented on Nov 13, 2025

    @caozhiyuan
    caozhiyuan
    on Nov 13, 2025
    Author

    Image and got this . config is "java.jdt.ls.vmargs": "-XX:+UseParallelGC -XX:GCTimeRatio=4 -Xmx3G -Xms1G -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true", i think 3G is enough

  8. fbricon commented on Nov 13, 2025

    @fbricon
    fbricon
    on Nov 13, 2025
    Collaborator

    Can you try to disable all extensions but vscode-java, and run the "Java: Clean Java Language Server Workspace" command?

  9. caozhiyuan commented on Nov 13, 2025

    @caozhiyuan
    caozhiyuan
    on Nov 13, 2025
    Author

    @fbricon it works ok on my home windows computer (only vscode-java , all extensions same works ok ), but got this error .

    Image Image

  10. fbricon commented on Nov 13, 2025

    @fbricon
    fbricon
    on Nov 13, 2025
    Collaborator

    Could be an orphan java process keeping a lock on some files. Normally, these processes would self-terminate after at most 30sec, if their parent PID was killed. If it keeps happening after a while, I'd say try to restart your windows session ... or computer

  11. snjeza commented on Nov 13, 2025

    @snjeza
    snjeza
    on Nov 13, 2025
    Collaborator

    The related issue - eclipse-jdtls/eclipse.jdt.ls#3587

  12. caozhiyuan
    closed this as completedon Nov 17, 2025
  13. fbricon
    added this to the End November 2025 milestone on Nov 19, 2025
  14. fbricon
    added
    performance
    on Nov 19, 2025

  15. skyblackhawk commented on Feb 26, 2026

    @skyblackhawk
    skyblackhawk
    on Feb 26, 2026

    For me today go out "Failed to find Main Class ...eclipse\plugins/org.eclipse.equinox.launcher_1.7.100v20251111-0406.jar" from 3 days ago.
    I suppose update my eclipse installation and I can't correct it I need to reinstall all.
    I'm using java 21.0.10

    Invece di cancellare la directory org.eclipse.osgi l'ho rinominata org.eclipse.osgi.OLD ma mi da il medeismo errore.

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