MPD filling kern.log with "delay: estimated 0, actual xxx"

[Corvin]

Here is my setup:
- Raspbian with the newest firmware and all updates.
- USB SB1290 sound card - Creative Sound Blaster X-Fi Go! Pro connected directly to Raspi USB port.
- Stanberg mains powered 7 port USB hub
- TP-Link TL-WN821N wireless usb card connected to usb hub.
- ocassionally connected HP hx4700 PDA running Ubuntu Jaunty (USB hub)

I am running Raspi as router serving internet to my home network (from wireless to cable through router configured as switch)
I am also running MPD on Raspi, and this is what this post is about.

When I play music over the USB card, my logs (kern.log, debug, syslog) fills up with data below (just an example):

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root@RaspI:/var/log# tail kern.log -n 30
Aug 21 11:33:39 RaspI kernel: [55017.777548] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.785545] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.793552] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.801552] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.809552] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.817555] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.825558] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.833554] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.841559] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.849561] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.857556] delay: estimated 0, actual 178
Aug 21 11:33:39 RaspI kernel: [55017.865557] delay: estimated 0, actual 178
Aug 21 11:33:39 RaspI kernel: [55017.886563] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.894565] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.902565] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.910565] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.918570] delay: estimated 0, actual 178
Aug 21 11:33:39 RaspI kernel: [55017.926567] delay: estimated 0, actual 178
Aug 21 11:33:39 RaspI kernel: [55017.934574] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.942577] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.950582] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.958582] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.966580] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.974586] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.982585] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55017.990586] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55018.011581] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55018.019589] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55018.027579] delay: estimated 0, actual 177
Aug 21 11:33:39 RaspI kernel: [55018.035585] delay: estimated 0, actual 177

This only happen when I play music form MPD. IF more data is needed I can provide it, just ask...

[Corvin]

Forgot to say, that this amount of logging really has a bad impact on Raspi resources. Have a look at the attached screenshot.

[fretti_jule]

I have the same problem, when I playing music with mpd, the files /var/log/debug and /var/log/kern.log and /var/log/syslog grow up to 2GB and more.

[fretti_jule]

I can suppress the messages by configure the rsyslog.conf, insert the line as first rule

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:msg,contains,"delay: estimated 0"  ~

That solves not the problem. It looks like a problem with the alsa-driver for external USB-sound-devices.
This problem seems to be solved in a higher kernel-version.

[fretti_jule]

Inserting the line

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options snd-usb-audio nrpacks=1

in /etc/modprobe.d/alsa-base.conf solves the problem for me.

[wouterel]

Inserting the line

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options snd-usb-audio nrpacks=1

in /etc/modprobe.d/alsa-base.conf solves the problem for me.

Thanks a lot... that works for me too!

[audetto]

Kernel 3.13 removes nrpacks and I still get this issues.

https://github.com/raspberrypi/linux/co ... 282630e9b9