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[llvm][cas] Implement a CAS stress tester #10606

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@cachemeifyoucan cachemeifyoucan commented May 1, 2025 •
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This is a basic tester for CAS ObjectStore that will insert random data into CAS and validate with several configurations randomly generated. It will check:

  • multi-threaded insertion
  • multi-process insertion
  • try randomly kill the subprocesses that are inserting data

And make sure it doesn't leave CAS in an invalid state. Suggested usage:

LLVM_CAS_LOG=2 llvm-cas-test --cas-path=... --print-config
@cachemeifyoucan cachemeifyoucan changed the title [llvm][cas] Implement basic fuzzer May 7, 2025
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[llvm][cas] Implement a CAS stress tester
373b461 
This is a basic tester for CAS ObjectStore that will insert random data
into CAS and validate with several configurations randomly generated.
It will check:

* multi-threaded insertion
* multi-process insertion
* try randomly kill the subprocesses that are inserting data

And make sure it doesn't leave CAS in an invalid state. Suggested usage:
```
LLVM_CAS_LOG=2 llvm-cas-test --cas-path=... --print-config
```
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@swift-ci please test llvm
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