15.07.2014 22:28, Alexander E. Patrakov wrote: > 13.07.2014 18:12, Tanu Kaskinen wrote: >> Someone (not me, at least any time soon) could write a simple >> patch that measures and logs (at error level - measurements shouldn't be >> done at debug log level) the time that the probing takes. Then test it >> on your development machine, and if the time seems negligible, try also >> e.g. plugging in a USB sound card to a Raspberry Pi. > > Done. See the attachment. Here is some data from the PC that I have to use at work: 0 = onboard analog audio, 1 = NVIDIA HDMI (with 4 outputs, out ow which only one corresponds to a physical connector), 2 = Logitech USB Headset H340 (borrowed from a colleague). I guess I need to redo the patch, because the numbers don't add up, especially for the USB headset. I.e. there is significant latency that is not covered by tv_this_profile. E: [pulseaudio] alsa-mixer.c: Checking for profile input:analog-mono took 1787 usec E: [pulseaudio] alsa-mixer.c: Checking for profile input:analog-stereo took 3639 usec E: [pulseaudio] alsa-mixer.c: Checking for profile input:iec958-stereo took 325 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-mono took 120 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-stereo took 372 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-21 took 24 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-40 took 214 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-41 took 232 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-50 took 228 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-51 took 236 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-71 took 213 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-stereo took 304 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-ac3-surround-40 took 6966 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-ac3-surround-51 took 369 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-dts-surround-51 took 584 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo took 18385 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround took 23026 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo-extra1 took 35001 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround-extra1 took 23027 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo-extra2 took 35028 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround-extra2 took 23040 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo-extra3 took 35022 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround-extra3 took 22996 usec E: [pulseaudio] alsa-mixer.c: Checking for all profiles on device 1 took 255536 usec in total E: [pulseaudio] alsa-mixer.c: Checking for profile input:analog-mono took 808 usec E: [pulseaudio] alsa-mixer.c: Checking for profile input:analog-stereo took 587 usec E: [pulseaudio] alsa-mixer.c: Checking for profile input:analog-4-channel-input took 737 usec E: [pulseaudio] alsa-mixer.c: Checking for profile input:iec958-stereo took 678 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-mono took 734 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-stereo took 553 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-stereo+input:analog-stereo took 1600 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-stereo+input:iec958-stereo took 995 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-21 took 84 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-40 took 1693 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-41 took 1080 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-50 took 1091 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-51 took 1063 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-71 took 1049 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-stereo took 615 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-stereo+input:analog-stereo took 2712 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-stereo+input:iec958-stereo took 787 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-ac3-surround-40 took 887 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-ac3-surround-51 took 607 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-dts-surround-51 took 2805 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-dts-surround-51+input:analog-stereo took 559 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-dts-surround-51+input:iec958-stereo took 665 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo took 323 usec E: [pulseaudio] alsa-mixer.c: Checking for all profiles on device 2 took 376117 usec in total E: [pulseaudio] alsa-mixer.c: Checking for profile input:analog-mono took 155533 usec E: [pulseaudio] alsa-mixer.c: Checking for profile input:analog-stereo took 2439 usec E: [pulseaudio] alsa-mixer.c: Checking for profile input:iec958-stereo took 266 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-mono took 738 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-stereo took 11029 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-stereo+input:analog-stereo took 432 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-21 took 33 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-40 took 8521 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-40+input:analog-stereo took 365 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-41 took 8088 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-41+input:analog-stereo took 490 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-50 took 466 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-50+input:analog-stereo took 251 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-51 took 352 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-51+input:analog-stereo took 288 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:analog-surround-71 took 1969 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-stereo took 2181 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-stereo+input:analog-stereo took 287 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-ac3-surround-40 took 2605 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-ac3-surround-51 took 3015 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-ac3-surround-51+input:analog-stereo took 438 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-dts-surround-51 took 4806 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:iec958-dts-surround-51+input:analog-stereo took 327 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo took 275 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround took 241 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo-extra1 took 218 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround-extra1 took 238 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo-extra2 took 220 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround-extra2 took 238 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-stereo-extra3 took 251 usec E: [pulseaudio] alsa-mixer.c: Checking for profile output:hdmi-surround-extra3 took 301 usec E: [pulseaudio] alsa-mixer.c: Checking for all profiles on device 0 took 214921 usec in total -- Alexander E. Patrakov
