RFR: 8306992: [JVMCI] mitigate more against JVMCI related OOME causing VM to exit [v2]
Doug Simon
dnsimon at openjdk.org
Thu May 18 20:47:28 UTC 2023
On Thu, 18 May 2023 14:18:10 GMT, Doug Simon <dnsimon at openjdk.org> wrote:
>> This PR makes the following changes to mitigate against an OOME or other recoverable error in JVMCI from causing the VM to exit:
>> * Tracks upcalls into libjvmci or creation of libjvmci.
>> * If 10% or more of these calls fail with an uncaught exception, then JVMCI compilation is disabled (i.e. future compilations fall back to Tier 1).
>>
>> When JVMCI compilation is disabled, a warning is emitted:
>>
>> [0.064s][warning][jit,compilation] JVMCI compiler disabled after 11 of 15 upcalls had errors (Last error: "uncaught exception in call_HotSpotJVMCIRuntime_compileMethod"). Use -Xlog:jit+compilation for more detail.
>>
>>
>> With `-Xlog:jit+compilation`, the extra detail shown is:
>>
>> [0.182s][info][jit,compilation] uncaught exception in call_HotSpotJVMCIRuntime_compileMethod while compiling java.util.stream.StreamOpFlag.fromCharacteristics(Ljava/util/Spliterator;)I
>> Exception in thread "JVMCI-native CompilerThread0": java.lang.InternalError
>> java.lang.InternalError: aborting compilation of HotSpotMethod<Object.<init>()>
>> at jdk.internal.vm.ci at 20.0.2-internal/jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.compileMethod(HotSpotJVMCIRuntime.java:923)
>>
>>
>> Note that the errors treated by the changes in the PR are expected to be exceedingly rare. For example, an OOME while starting a libgraal isolate or initializing the JVMCI compiler. Exceptions thrown during compilation are already handled by the Graal [CompilationWrapper](https://github.com/oracle/graal/blob/431ecf7d26f56cee49708854fe0e89b05514492b/compiler/src/jdk.internal.vm.compiler/src/org/graalvm/compiler/core/CompilationWrapper.java#L65).
>
> Doug Simon has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:
>
> - Merge remote-tracking branch 'openjdk-jdk/master' into JDK-8306992
> - send JVMCI exception info to hs-err log and/or tty
> - remove unused callToString method
> - make JMCI more robust in low resource conditions
I rebased this PR to remove commits from https://github.com/openjdk/jdk/pull/14000 that accidentally got cherry-picked into this PR.
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PR Comment: https://git.openjdk.org/jdk/pull/13905#issuecomment-1553619797
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