[PATCH] D97046: [lit] Add "late_tests" test suite config option

[Thomas Preud'homme via Phabricator via llvm-commits]

thopre added a comment.

In D97046#2578450 <https://reviews.llvm.org/D97046#2578450>, @jhenderson wrote:

> Could you clarify more what the benefit of running the tests later actually is? Is this intended to be useful in conjunction with something else? On the face of it, I'd expect people to run the full testsuite to completion, and then observe the full results. Ultimately, it doesn't matter whether a test runs first or last in this order for that case.

You want long running tests to run first and shorter one last as they will use to balance the imbalance from long running test. It's just to maximize the parallelism. If you have some medium to big tests running at the end, the risk is you are waiting for one core to finish while all the others are sitting idle. If you keep lots of small tests at the end, the cores that are idle will pick from it and hopefully reduce the imbalance.


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  https://reviews.llvm.org/D97046/new/

https://reviews.llvm.org/D97046