31 Dec
2002
31 Dec
'02
3:26 p.m.
So, my question to this list is if someone has run a
similar system for
days without underflows, and if there is some guide or tips on how to
speaking personally, i have not. moreover, i don't believe its
possible with the current kernel, and probably will not be for the
foreseeable future. there are too many corner cases in the kernel
where the OS steals the processor for too long when running with this
kind of latency.
Is it even possible today to build an embedded system
with 1.5 ms
processing block based on Linux, which runs until hardware or power
failure?
if its based on RTLinux or some other variant of that idea, then
yes. but based on the regular kernel+patches, no, i don't think so.
Oh, my software does not necessarily need to access
any
filesystem while it is processing, although it would be good if it
could (to continuously save volume settings and similar if changed
through the remote control). So it can be seen as a strict
soundcard-to-the-cpu-and-back problem.
nothing in a multiuser, multitasking non-RT OS is ever a "strict
soundcard-to-the-cpu-and-back" problem :))
--p