Disk Scheduler in Linux I am studying about Disk Scheduling in my OS class. Thought about the disk scheduler in Linux. When I run cat /sys/block/sda/queue/scheduler noop anticipatory deadline [cfq] Someone explain about this noop anticipatory deadline [cfq]. Text books says scan, cscan, look, fifo, sstf...

That means that four schedulers are available, `noop`, `anticipatory`, `deadline`, and `cfq`. Currently, `cfq` is active. See Selecting a Linux I/O Scheduler.