我的 rabbitmq 是自己使用 docker 部署在 aliyun 的 ecs 上 version: "3.7" services: rabbitmq3-management: restart: always container_name: rabbitmq3-management image: rabbitmq:3.12.14-management hostname: rabbitmq3-management-standalone logging: driver: json-file options: max-size: "100m" max-file: "1" environment: - RABBITMQ_DEFAULT_USER=ponponon - RABBITMQ_DEFAULT_PASS=ponponon volumes: - "./volumes:/var/lib/rabbitmq" - "./rabbitmq.conf:/etc/rabbitmq/rabbitmq.conf" ports: - "5672:5672" - "15672:15672" - "15692:15692" `rabbitmq.conf` vm_memory_high_watermark.relative = 0.55 但是我发现,这个机器 cpu 最多只被使用了 75%,再多就上不去了  