Re: [PATCH] speed up SATA

Nick Piggin
2004-03-27T23:48:05Z

Jeff Garzik wrote:
> Nick Piggin wrote:
>
>> I think 32MB is too much. You incur latency and lose
>> scheduling grainularity. I bet returns start diminishing
>> pretty quickly after 1MB or so.
>
>
> See my reply to Bart.
>
> Also, it is not the driver's responsibility to do anything but export
> the hardware maximums.
>
> It's up to the sysadmin to choose a disk scheduling policy they like,
> which implies that a _scheduler_, not each individual driver, should
> place policy limitations on max_sectors.
>

Yeah I suppose you're right there. In practice it doesn't
work that way though, does it?