[linux-audio-dev] Realtime audio and IO schedulers

[Lee Revell]

On Sat, 2005-01-22 at 21:03 +0100, Florian Schmidt wrote:
> Hi,
> 
> i wonder if there's a way to grant a process priority over all other
> processes when it comes to disk i/o.. Somewhat similar like SCHED_FIFO
> scheduling for cpu priorities.
> 
> This would be very useful especially for high reliability hard disk
> recording. I mean it would be simply great to record 24 tracks in ardour
> and not having to worry about disk underrun [or overrun] when a cronjob
> kicks in that scans the whole filesystem..
> 
> I heard and read a bit about the new io schedulers in the 2.6.x kernels,
> but i wasn't able to find any infos specifically on this subject..
> 
> So anyone knows more? Please let us know! Maybe current io-schedulers
> actually take the cpu priorities [nice level or relatime priorities]
> into account when assigning io bandwidth to processes, but if so i
> wouldn't know where to look to find out..
> 

http://kerneltrap.org/node/4406

Lee