# 4 virtual threads on ONE carrier, each sleeping 200 ms inside synchronized (JEP 491, Java 24)

$ java -Djdk.virtualThreadScheduler.parallelism=1 -Djdk.virtualThreadScheduler.maxPoolSize=1 PinningDemo      (JDK 21)
    java.version = 21.0.12.1
    4 virtual threads, 1 carrier, sleep(200) inside synchronized: SERIALISED (pinned): about 4 x 200 ms

$ java -Djdk.virtualThreadScheduler.parallelism=1 -Djdk.virtualThreadScheduler.maxPoolSize=1 PinningDemo      (JDK 25)
    java.version = 25.0.4.1
    4 virtual threads, 1 carrier, sleep(200) inside synchronized: OVERLAPPED (not pinned): about 200 ms

$ java -Djdk.virtualThreadScheduler.parallelism=1 -Djdk.virtualThreadScheduler.maxPoolSize=1 PinningDemo      (JDK 26)
    java.version = 26.0.2.1
    4 virtual threads, 1 carrier, sleep(200) inside synchronized: OVERLAPPED (not pinned): about 200 ms

$ java -Djdk.virtualThreadScheduler.parallelism=1 -Djdk.virtualThreadScheduler.maxPoolSize=1 PinningDemo      (JDK 27)
    java.version = 27
    4 virtual threads, 1 carrier, sleep(200) inside synchronized: OVERLAPPED (not pinned): about 200 ms

$ java -Djdk.virtualThreadScheduler.parallelism=1 -Djdk.virtualThreadScheduler.maxPoolSize=1 PinningDemo      (JDK 23, Corretto image)
    java.version = 23.0.2
    4 virtual threads, 1 carrier, sleep(200) inside synchronized: SERIALISED (pinned): about 4 x 200 ms

$ java -Djdk.virtualThreadScheduler.parallelism=1 -Djdk.virtualThreadScheduler.maxPoolSize=1 PinningDemo      (JDK 24, Corretto image)
    java.version = 24.0.2
    4 virtual threads, 1 carrier, sleep(200) inside synchronized: OVERLAPPED (not pinned): about 200 ms