On Thu, 16 Dec 2004, Steve Smith wrote: > On Wed, 2004-12-15 at 19:38, Andrew Daviel wrote: > > I have noticed in several Linux systems that Rat (ratmedia) is using > > 100% of a CPU (if it can get it) in system state. This seems to > > block the Venue client on a 1-CPU box. > > The last time I saw this it the workaround was to switch into stereo > mode. I suspect that the mono audio code in the drivers doesn't get a > lot of testing.
That didn't help. However, building and installing the Alsa driver (snd-ens1371) instead of the OSS one (es1371) seems to fix it. We have several systems with these cards running various RedHat 9, Fedora & Scientific Linux and generally use the distro kernel and modules (and subsequent updates) for administrative/security reasons. So having to change to Alsa is a bit of a nuisance, as it may need re-installing after kernel updates, and means we have system files that don't belong to RPMs and may get trashed. I note that other (non-full-duplex) apps such as "record" and "play" do not consume this CPU. I don't understand, but at least I have a solution. ... so now maybe I can spec. a 1-CPU system after all ... -- Andrew Daviel, TRIUMF, Canada Tel. +1 (604) 222-7376 (Pacific Time) secur...@triumf.ca
