Re: scheduler question 2.6.16.x

[Jens Axboe]

On Tue, Apr 25 2006, Nick Warne wrote:
> Hi all,
> 
> I see in menuconfig I have two options:
> 
> <*> Anticipatory I/O scheduler
> <*> Deadline I/O scheduler
> 
> Help reveals Anticipatory is pretty good, but make a slightly larger
> kernel - Deadline help says it a good alternative to Anticipatory.
> 
> But I can build both in... so I guess then the kernel decides what is
> the best to use?  Or should it be so I am only allowed to select one
> or the other and allowing both is an oversight?

See the option no more than two lines down from that, default io
scheduler. Also see Documentation/block/switching-sched.txt and/or
Documentation/kernel-parameters.txt (elevator=) section.

-- 
Jens Axboe

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