RFR: JDK-8327059: os::Linux::print_proc_sys_info add swappiness information

[David Holmes]

On Thu, 29 Feb 2024 15:42:14 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> The swappiness information is an important reclaim ration metrics on Linux. See https://documentation.suse.com/sles/15-SP2/html/SLES-all/cha-tuning-memory.html#cha-tuning-memory-vm .
> We should add it to the already existing information about data from /proc/sys .

Seems fine.

Thanks

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Marked as reviewed by dholmes (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18068#pullrequestreview-1913438470