Re: Pluggable Disk Schedulers in GEOM

[Julian Elischer <julian_(_at_)_elischer_(_dot_)_org>]

Luigi Rizzo wrote:
> On Fri, Jan 05, 2007 at 01:25:43PM -0800, Paul Allen wrote:
orant of I/O that
> this was also on 4.11 which probably does not use softupdates.

yes it does.. Doesn't have UFS2 and snapshots however.


> that does not mean that a scheduler is useless in general.
> in fact, what i find questionable is hardwiring unnecessary
> (in the sense that they are done only for performance reasons)
> ordering constraints in the layers above. I cannot comment for
> the disk, but e.g. for the process scheduler there are priority
> updates in many places depending on what the process is doing.
>
> 	cheers
> 	luigi
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