#查看默认io调度算法#rocky llinux9[rootlocalhost block]# cat /sys/block/nvme0n1/queue/scheduler[none] mq-deadline kyber bfq#centos7[rootlocalhost queue]# cat /sys/block/sda/queue/schedulernoop [deadline] cfq[rootlocalhost queue]##修改调度算法echo cfq /sys/block/sda/queue/scheduler