I can't comment on the USB problem you're having because I use the optical out from my macbook pro. I think it sounds just a wee bit better. As for the app nap, I'll have to do a bit more looking around. I still have the app nap option for all the other apps that had it before, so I suspect this is to do with A+. Like you, I do not have an app nap option for Audirvana Plus. It might be worthwhile uninstalling and then reinstalling A+ if you're having trouble with it. It is performing fine for me.
Thanks. Like they say in Maine, "Is that
all you done? Yeah, but I done it,
three times!'
Multiple re-installs of OS 10.9.2
and A+, with Command-S /sbin/fsck -fy reboots/exits and Disk Utility 'Repair Disk Permissions' yada, yada, etc., i.e., "Round up the usual suspects."
Before re-installing A+, I even manually de-installed all remnants of A+ once using
sudo rm -R on these directory locations:
~/Library/Application Support |
~/Library/Caches/com.audirvana.Audirvana-Plus |
~/Library/Preferences |
/Library/LaunchDaemons/com.audirvana.Audirvana-Plus.plist |
Get Info
had the 'Prevent App Nap' box for A+ 1.5.12 on OS X 10.9.1; it disappeared on 10.9.2. Using Time Machine to revert to 10.9.1 CPRs it back to life.
Try this line of code
if you do experience an audible drop out. Quit A+, and type (or copy and paste) in a Terminal window:
sudo defaults write com.audirvana.Audirvana-Plus NSAppSleepDisabled -bool YES
and then 'enter' your admin password; quit Terminal, and relaunch A+.
Also, if you leave A+ running overnight and then launch Console, do you have any A+ crash reports?
If you do
not find any, perhaps the S/PDIF drivers don't need as many
wakeups as the USB 3.0 drivers do?
What I find, running at 352.8 kHz or 384 kHz PCM, is (emphasis added for clarity):
Feb 27 10:44:49 Peters-MacBook-Pro kernel[0]: process Audirvana Plus[2934] caught causing excessive wakeups. Observed wakeups rate (per sec): 178; Maximum permitted wakeups rate (per sec): 150; Observation period: 300 seconds; Task lifetime number of wakeups: 45001 |
Feb 27 10:44:49 Peters-MacBook-Pro.local Audirvana Plus[2934]: Strong issue, need to restart playback |
Feb 27 10:44:49 Peters-MacBook-Pro.local Audirvana Plus[2934]: Restarted: 0 |
Feb 27 10:44:50 Peters-MacBook-Pro.local spindump[2943]: Saved wakeups_resource.spin report for Audirvana Plus version 1.5.12 (1.5.12) to /Library/Logs/DiagnosticReports/Audirvana Plus_2014-02-27-104450_Peters-MacBook-Pro.wakeups_resource.spin |
The math works out to
53,400 wakeups observed within a 300 second period!
I guess Mavericks is a 'guilty-until-proven-innocent' type of oligarchy. The psychometrics intrinsic to the phrase, "
CAUGHT causing
excessive wakeups" is, well, chilling! It suggests to me something akin to a spousal anti-snoring device commercial rehearsal that was diverted instead to Probate Court for adjudication.
The MCP in TRON comes to mind as well, but that's just me, I guess.