Re: [PATCH][RFT] simple deadline I/O scheduler

[Jens Axboe]

On Sat, Jan 05 2002, Pavel Machek wrote:
> Hi!
> 
> > I've played around with implementing an I/O scheduler that _tries_ to
> > start request within a given time limit. Note that it makes no
> > guarentees of any sort, it's simply a "how does this work in real life"
> > sort of thing. It's main use is actually to properly extend the i/o
> > scheduler / elevator api to be able to implement more advanced
> > schedulers (eg cello).
> 
> Would it be possible to introduce concept of I/O priority? I.e. I want 
> updatedb not to load disk if I need it for something else?

I've been toying with equal i/o distribution between the processes in
the system, but it isn't done yet. I know Arjan is working on a priority
scheduler, too. So something is bound to materialize sooner or later :)

-- 
Jens Axboe