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SubjectRe: [RFC 0/3]block: An IOPS based ioscheduler
On Mon, Jan 09, 2012 at 09:26:45AM +0800, Shaohua Li wrote:

> > Could you for example compare a latency of reads while running heavy
> > background writing between CFQ and your scheduler? Loads like this where
> > original motivation for CFQ I believe.
> CFQ supports preemption, FIOPS doesn't, so I suppose read latency of CFQ
> is still better in such workload.
> In this initial post, I just want to demonstrate the basic idea of the
> ioscheduler. I'll post more data for both latency and throughput in next
> round.

I think before numbers what will be more helpful to know is that what are
you trying to achieve and why existing CFQ code can not do that with little


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