Ok so fresh hard drive fresh 9.10 install with latencytop running alongside Bob Marley.
Here's what I see. This is the original disk that came with the laptop, a 100gb 4400 rpm drive; it's pretty slow. I see two causes with higher latency: fsync() on a file, and scheduler: waiting for cpu fsync() on a file just reported 67.6ms, but I have seen it over 1 second. Scheduler: waiting for cpu just reported 34.1ms but I have seen it bulge to 300+ when one of those darn ath5k phy0: noise floor calibration timeout (2412MHz) messages come up. I have heard no stuttering. There are no "underrun" messages in syslog or messages, mind you I haven't turned on the verbose mode on the pulseaudio daemon. ok there was another ath5k message and a 273.1ms Scheduler: waiting for CPU. now scheduler is 38.9ms. now scheduler is 46.6ms now scheduler is 44.2ms So I am concluding that the latencies are lower except when the ath5k noise floor thing happens. And generally I'm not hearing / seeing evidence of underruns. David, it's convenient for me to do other testing in both versions of Ubuntu, so if you have any other ideas, please let me know. Thanks! -- Wireless blocks USB-Audio, leading to dropouts https://bugs.launchpad.net/bugs/579117 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
