The option is deprecated, and does not seem to provide much of a benefit. Tier1-2 clean. The microbenchmark yields comparable results with or without `jdk.net.useFastTcpLoopback=true` on my Win11 machine.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - Update copyright - Remove microbenchmark for fast loopback - Revert "8060170: Support SIO_LOOPBACK_FAST_PATH option on Windows" Changes: https://git.openjdk.org/jdk/pull/33383/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=33383&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8394531 Stats: 76 lines in 8 files changed: 0 ins; 68 del; 8 mod Patch: https://git.openjdk.org/jdk/pull/33383.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/33383/head:pull/33383 PR: https://git.openjdk.org/jdk/pull/33383
