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The test involves timestamping to figure out how long a swap actually takes, but if anything ends up rescheduling the process you can end up spuriously failing. I could easily reproduce flakiness by just running a loop accessing the filesystem in parallel with a loop running the test. So, it's certainly not usable on a CI system with other piglit tests running in parallel, and we don't want to run it if it's going to just produce flake noise. Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11333>