Messages in this thread | | | Date | Fri, 5 Apr 2013 16:17:38 +0200 | From | Jan Kara <> | Subject | Re: block device queues, elevatoring implicit or explicit? |
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On Sat 16-03-13 02:06:00, Raymond Jennings wrote: > Are all block devices fundamentally elevators or fifos or what? > > To be blunt, if a bunch of concurrent processes dump requests on a > noop queue, are they serviced fifo or in elevator order or what? > > My goal is to get a dumb elevator that does nothing but sweep up and > down the disk mopping up outstanding requests as the disk heads ooze > across the sectors. With noop io scheduler you get the FIFO ordering of requests.
Honza -- Jan Kara <jack@suse.cz> SUSE Labs, CR
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