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eclipse-openj9 / openj9

Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.
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Investigate excessive memory consumption on jdk_vector_0 test #16309

Open Akira1Saitoh opened 2 years ago

Akira1Saitoh commented 2 years ago

When running jdk_vector_0 test, JIT uses too much memory for compiling some methods. For example, the scratch memory (1.5GB) is used up when compiling Byte64VectorTests.divByte64VectorTestsMasked(Ljava/util/function/IntFunction;Ljava/util/function/IntFunction;Ljava/util/function/IntFunction;)V. https://github.com/ibmruntimes/openj9-openjdk-jdk19/blob/110e1e7808efdb0cdd180dfb12a22843777f3d3c/test/jdk/jdk/incubator/vector/Byte64VectorTests.java#L1723-L1742

This occurs even when VectorAPIExpansion is disabled (actually, the compilation failed before the optimization phase reaches VectorAPIExpansion). I observed this behavior both on x86 and aarch64.

Akira1Saitoh commented 2 years ago

@gita-omr FYI

llxia commented 2 years ago

Just for the record, the jdk_vector temporarily set the concurrency to 1 on linux_aarch64 (see https://github.com/adoptium/aqa-tests/pull/4119). Once the current issue is resolved, we should revert https://github.com/adoptium/aqa-tests/pull/4119.

gita-omr commented 1 year ago

Can we close this issue considering https://github.com/adoptium/aqa-tests/pull/4189 ?

Akira1Saitoh commented 1 year ago

Unfortunately, we cannot. https://github.com/adoptium/aqa-tests/pull/4189 just enables some of the tests which were disabled before we found the reason of unexpected exit. Without https://github.com/adoptium/aqa-tests/pull/4119, the tests are still killed by OOM killer.