[Bug 631871] Re: default I/O scheduler should be change from CFQ to deadline

[DLHDavidLH]

i think there should be more testing for the

Default I/O scheduler...........

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CFQ [cfq] (Completely Fair Queuing) is an I/O scheduler for the Linux
kernel and default under many Linux distributions.

Noop scheduler (noop) is the simplest I/O scheduler for the Linux kernel
based upon FIFO queue concept.

Anticipatory scheduler (anticipatory) is an algorithm for scheduling
hard disk input/output as well as old scheduler which is replaced by CFQ

Deadline scheduler (deadline) - it attempt to guarantee a start service
time for a request.


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http://en.wikipedia.org/wiki/I/O_scheduling

http://en.wikipedia.org/wiki/Deadline_scheduler
http://en.wikipedia.org/wiki/Noop_scheduler
http://en.wikipedia.org/wiki/Anticipatory_scheduling
http://en.wikipedia.org/wiki/CFQ

http://lwn.net/Articles/114770/
http://www.cyberciti.biz/faq/linux-change-io-scheduler-for-harddisk/

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default I/O scheduler  should be change from CFQ to deadline
https://bugs.launchpad.net/bugs/631871
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