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IPC blocks temporarily if resources are available late #200

Closed exodist closed 3 years ago

exodist commented 3 years ago

In a run at $work only 7 tests were running after a timeout despite -j8 and 8 total resources. I suspect the logic that restores resources to the pool does not work right with timeout kills.

exodist commented 3 years ago

no, this was not the issue

exodist commented 3 years ago

Reopening, but the issue is different than initially expected.

If a resource becomes available after a test run has started, but was not unavailable due to another process using it (DB init takes longer that stage init) then the IPC will block until at least 1 process exited before realizing it has resources to fill more job slots.