通过nacos/v1/ns/ops/metrics查看注册中心指标,发现mem指标一直是1,查看代码计算逻辑是OperatingSystemBeanManager.getFreePhysicalMem / OperatingSystemBeanManager.getTotalPhysicalMem,应该改为(double)OperatingSystemBeanManager.getFreePhysicalMem / (double) OperatingSystemBeanManager.getTotalPhysicalMem