[jdk13u-dev] RFR: 8227006: [linux] Runtime.availableProcessors execution time increased by factor of 100

[Ekaterina Vergizova]

I'd like to backport 8227006 to 13u.
The patch applies cleanly.
Tested with tier1, containers tests and reproducer from this bug.

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Commit messages:
 - Backport f5632e62b2faa1733f3b2feefec48380e29c161c

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/29/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=29&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8227006
  Stats: 39 lines in 2 files changed: 31 ins; 5 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk13u-dev/pull/29.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/29/head:pull/29

PR: https://git.openjdk.java.net/jdk13u-dev/pull/29