RFR: 8296125: Add a command line option to set a refresh rate of the OS cached metrics in Linux [v2]

[Severin Gehwolf]

On Thu, 15 Dec 2022 02:35:30 GMT, senecaspurling <duke at openjdk.org> wrote:

> With -XX:OsCachedMetricsRefreshRate=1, the lowest possible setting here, this slows the timeout down to 1000ms (1 second). They do see some improvement with this but it's not sufficient.

So reading the file once a second is not sufficient? I wonder what would be then. Only disabling the dynamic nature entirely, I guess. But that would be similar to what `-XX:-UseDynamicNumberOfCompilerThreads` would do.

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PR: https://git.openjdk.org/jdk/pull/10918