Re: [linux-audio-user] alsa rme96 jack - 186 msec latency?

My current setup is kernel 2.6.12.6 with the gentoo-sources patchset plus the realtime-preemption patch. I have both realtime-LSM and rtlimits. (With PAM patched for rtlimits) I'm using Jack 0.100.4. I doubt chrt will do much for you, although you're welcome to try it. I've never needed to use it. Messages like "late driver wakeup" would lead me to think this an alsa driver problem, or possible an IRQ problem. I would start by looking at your alsa driver and how it is set up. Do you have more than I sound device? If so, are you sure that the RME 96/32 is hw:0 ? Is the alsa driver loaded as a module or built into the kernel? For that matter, are you sure you have your kernel configured correctly? You patched it, but what settings did you use? Do non jack apps give you problems when playing back audio? How are IRQs set up in your kernel? (Are you using APIC?) Is the sound card sharing IRQs? Right now I think your kernel config is highly suspect since it seems you're somewhat new to kernel configs. Secondary suspect is your system setup. (I know nothing of how the PCLinuxOS distro is configured) I always build mine by hand. That way I know for sure how it's been configured, and there are a lot of build options with Jack that can drastically change how it behaves. -Reuben