On Tue, 28 Oct 2025 10:41:52 GMT, Damon Fenacci <[email protected]> wrote:
> # Issue > > Several Valhalla compiler specific tests are slow and this affects the > overall execution time of lower tiers. > [JDK-8369437](https://bugs.openjdk.org/browse/JDK-8369437) has already > improved the situation by splitting multiple @run statements in compiler > tests into separate @test blocks for several tests. There are nevertheless > still a handful of tests that take up to a dozen minutes to finish. > > # Cause > > Most tests affected are using multiple IR-Framework scenarios to start tests > with different flags. The tests are started sequentially, adding the > execution time of each test. The problem is similar to > [JDK-8369437](https://bugs.openjdk.org/browse/JDK-8369437) but at > IR-Framework level. > > # Fix > > We can parallelize the execution of scenarios similar to what has been done > in the [fix](https://github.com/openjdk/valhalla/pull/1681/files) for > [JDK-8369437](https://bugs.openjdk.org/browse/JDK-8369437). Unfortunately the > IR-Framework doesn't allow tests to be run on different machines and there is > no simple way to make it interact with JTReg in that way. So, as a > provisional and minimalistic solution, scenarios are added and started one by > one and run by individual JTReg `@test` entries. > > # Testing > > Tier 1-3 > Worst-time compiler/valhalla JTReg tests went from 16min to <2min This pull request has now been integrated. Changeset: cf32b275 Author: Damon Fenacci <[email protected]> URL: https://git.openjdk.org/valhalla/commit/cf32b2750cb3ccbb33c2d63868d47c69610b8882 Stats: 958 lines in 12 files changed: 929 ins; 0 del; 29 mod 8369530: [lworld] Improve execution time of compiler tests Reviewed-by: mhaessig, thartmann, chagedorn ------------- PR: https://git.openjdk.org/valhalla/pull/1708
