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

From: Lee Revell <rlrevell@email-addr-hidden-job.com>
Date: Sat Jan 22 2005 - 22:53:33 EET

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
Received on Sun Jan 23 00:15:13 2005

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