[LAD] RT

[Florian Schmidt]

On Friday 25 April 2008, Dominique Michel wrote:
> You must use the rtirq package. It is a boot script that use chrt to fix
> the priorities for different IRQ. The trick is to setup the highest
> priority to the rtc (the system will hang otherwise), followed by the
> sound, followed by the other pieces of hardware.

Whether or not the rtc irq should have the highest priority only depends on 
your setup and application use..

The RTC is a service which provides a simple timing interface via /dev/rtc. 
Most applications don't use it. So in most cases upping the rtc irq prio does 
not do anything (as long as it's not used, it doesn't matter)..

The statement "the system will hang otherwise" is certainly false in general..

There are some applications though that can make use of the RTC (mainly 
sequencers). For these it makes sense to setup a high irg prio for RTC.

Regards,
Flo


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