[Webkit-unassigned] [Bug 201139] New: run-webkit-tests: Cap the number of automatically booted simulators at 12

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201139

            Bug ID: 201139
           Summary: run-webkit-tests: Cap the number of automatically
                    booted simulators at 12
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jbedard at apple.com

It seems that with a larger number of cores and memory, simulators start to be bound by some other system resource. In particular, contributors with iMac Pros and 128 GB of RAM will boot between 16 and 20 simulators, and begin to see diminishing returns on how fast simulator tests are run. By default, we should cap the number of simulators we automatically boot at 12. Note that this change will not have an effect on the number of simulators booted unless a machine is automatically booting more than 12 simulators.

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