RFR: 8260555: Change the default TIMEOUT_FACTOR from 4 to 1 [v4]

[Leo Korinth]

On Tue, 19 Aug 2025 05:47:06 GMT, David Holmes <dholmes at openjdk.org> wrote:

> By rough count there are 1300 tests that have an explicit timeout set. This change would reduce the actual applied timeout to a quarter of what was previously used, yet you have only had to bump the timeout value for a fraction of the tests - which I find somewhat (pleasantly) surprising. It may be that many of these timeouts stem from a time when we had much much slower machines, so a refresh might not be a bad thing. It will take some time to see the full effects of this change though.

Thanks David! And as you said, a few more adjustments will probably be needed when we have run this for a while.

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PR Comment: https://git.openjdk.org/jdk/pull/26749#issuecomment-3199869795