On Fri, 17 Jan 2025 08:40:36 GMT, Matthias Baesken <mbaes...@openjdk.org> wrote:
> I was able to run a few benchmarks with the LTO enabled JVM , > but as far as I remember a couple of HS jtreg tests fail with LTO enabled > because they have some expectations that might not (yet) work with LTO On Linux x86_64 (gcc 11.3 devkit) , when building with lto enabled, the jdk :tier1 jtreg tests all worked nicely in my environment. The HS :tier1 jtreg tests had 51 failures, 50 in the serviceability/sa area . Those failures (from serviceability/sa) seem to have in common that they show such an exception stderr: [Exception in thread "main" java.lang.InternalError: Metadata does not appear to be polymorphic at jdk.hotspot.agent/sun.jvm.hotspot.types.basic.BasicTypeDataBase.findDynamicTypeForAddress(BasicTypeDataBase.java:223) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VirtualBaseConstructor.instantiateWrapperFor(VirtualBaseConstructor.java:104) at jdk.hotspot.agent/sun.jvm.hotspot.oops.Metadata.instantiateWrapperFor(Metadata.java:78) at jdk.hotspot.agent/sun.jvm.hotspot.oops.MetadataField.getValue(MetadataField.java:43) at jdk.hotspot.agent/sun.jvm.hotspot.oops.MetadataField.getValue(MetadataField.java:40) at jdk.hotspot.agent/sun.jvm.hotspot.classfile.ClassLoaderData.getKlasses(ClassLoaderData.java:82) at jdk.hotspot.agent/sun.jvm.hotspot.classfile.ClassLoaderData.classesDo(ClassLoaderData.java:101) at jdk.hotspot.agent/sun.jvm.hotspot.classfile.ClassLoaderDataGraph.classesDo(ClassLoaderDataGraph.java:84) at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor$19.doit(CommandProcessor.java:926) at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2230) at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.executeCommand(CommandProcessor.java:2200) at jdk.hotspot.agent/sun.jvm.hotspot.CommandProcessor.run(CommandProcessor.java:2071) at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.run(CLHSDB.java:112) at jdk.hotspot.agent/sun.jvm.hotspot.CLHSDB.main(CLHSDB.java:44) at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runCLHSDB(SALauncher.java:285) at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:507) or test serviceability/sa/TestJhsdbJstackMixed.java stderr: [java.lang.InternalError: Metadata does not appear to be polymorphic at jdk.hotspot.agent/sun.jvm.hotspot.types.basic.BasicTypeDataBase.findDynamicTypeForAddress(BasicTypeDataBase.java:223) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VirtualBaseConstructor.instantiateWrapperFor(VirtualBaseConstructor.java:104) at jdk.hotspot.agent/sun.jvm.hotspot.oops.Metadata.instantiateWrapperFor(Metadata.java:78) at jdk.hotspot.agent/sun.jvm.hotspot.oops.Oop.getKlassForOopHandle(Oop.java:224) at jdk.hotspot.agent/sun.jvm.hotspot.oops.ObjectHeap.newOop(ObjectHeap.java:180) at jdk.hotspot.agent/sun.jvm.hotspot.oops.VMOopHandle.resolve(VMOopHandle.java:61) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.JavaThread.getThreadObj(JavaThread.java:365) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.JavaThread.getCurrentParkBlocker(JavaThread.java:438) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.DeadlockDetector.print(DeadlockDetector.java:80) at jdk.hotspot.agent/sun.jvm.hotspot.runtime.DeadlockDetector.print(DeadlockDetector.java:39) at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:79) at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:65) at jdk.hotspot.agent/sun.jvm.hotspot.tools.PStack.run(PStack.java:60) at jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.run(JStack.java:67) at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:278) at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:241) at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:134) at jdk.hotspot.agent/sun.jvm.hotspot.tools.JStack.runWithArgs(JStack.java:90) at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJSTACK(SALauncher.java:306) at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:507) ] Not sure what it exactly means, maybe the lto optimization removes some metadata related information that is expected ? ------------- PR Comment: https://git.openjdk.org/jdk/pull/22464#issuecomment-2598410228