[linux-audio-dev] DRI + Jack conflict?

Paul Davis paul at linuxaudiosystems.com
Tue Feb 10 08:10:25 EST 2004


>On Mon, Feb 09, 2004 at 07:32:35PM -0500, Paul Davis wrote:
>>its a basic problem with real time software, the POSIX API etc.
>>JACK tries to lock *all* the process memory. 
>
>This is to ensure that nothing gets swapped out, right ?
>Else it is very hard to ensure real time performance ?
>(sorry for being somewhat ignorant in this matter).

well, swapping is one aspect. page faults are the other. either way,
yes,  we need to ensure that real-time code is never stalled waiting
for data to be bought into memory from disk storage.

>Would you consider implementing a work around (aka non portable kludgery)
>a waste of time ?

Mostly, though there are people who would probably find it valuable. 

--p


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