dmesg got flooded by IOAudio debug

Sierra 10.12.4 - MBP early 2015

I wonder why my dmesg is flooded by this debugging output.

Thanks

+ IOAudioEngineUserClient::externalMethod, selector=0x0, arg0 0x0, arg1 0x10b9a1000, arg2 0x8010 arg3 0x93

scalarInputCount=0x4 structureInputSize 0x0, scalarOutputCount 0x0, structureOutputSize 0x0

+ IOAudioEngineUserClient::registerBuffer64 0x0 0x10b9a1000 0x8010 0x93

+ IOAudioEngineUserClient::safeRegisterClientBuffer64 <ptr>

+ IOAudioEngineUserClient[<ptr>]::registerClientBuffer64 (<ptr>[1], 0x10b9a1000, 0x8010, 0x93)

null clientBufferSetList

did not find clientBufferSetList for ID 0x93

clientBuffer->mAudioClientBuffer32.sourceBuffer before offset: <ptr>, offset size: 16

clientBuffer->mAudioClientBuffer32.sourceBuffer after offset: <ptr>

null clientBufferSetList

did not find clientBufferSetList for ID 0x93

creating new IOAudioClientBufferSet

output

!isOnline

- IOAudioEngineUserClient::registerClientBuffer64() result 0x0

- IOAudioEngineUserClient::safeRegisterClientBuffer64 returns 0x0

- IOAudioEngineUserClient::registerBuffer64 0x0 0x10b9a1000 0x8010 0x93 returns 0x0

- IOAudioEngineUserClient::externalMethod returns 0x0

+ IOAudioEngineUserClient::externalMethod, selector=0x3, arg0 0x0, arg1 0x0, arg2 0x0 arg3 0x0

scalarInputCount=0x0 structureInputSize 0x0, scalarOutputCount 0x0, structureOutputSize 0x0

+ IOAudioEngineUserClient[<ptr>]::startClient() - 0

audioEngine && !isInactive(). State = 0

audioEngine->getState() != kIOAudioEnginePaused

+- IOAudioEngineUserClient[<ptr>]::setOnline(1)

!isOnline() setting online

+ IOAudioEngine[<ptr>]::startClient(<ptr>)

+ IOAudioEngine[<ptr>]::incrementActiveUserClients() - 0

+ IOAudioEngine[<ptr>]::startAudioEngine(state = 0)

+- IOAudioDevice[<ptr>]::flushAudioControls()

+ IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 1 - pending = 2

- IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 2 - pending = 2 returns 0x0

+ IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 2 - pending = 2

- IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 2 - pending = 2 returns 0x0

+ IOAudioDevice[<ptr>]::audioEngineStarting() - numRunningAudioEngines = 0

- IOAudioDevice[<ptr>]::audioEngineStarting() - numRunningAudioEngines = 1

+- IOAudioEngine[<ptr>]::resetStatusBuffer()

+-IOAudioEngine[<ptr>]::setState(0x1. oldState=0)

- IOAudioEngine[<ptr>]::getTimerInterval()

- IOAudioEngine[<ptr>]::startAudioEngine() returns 0x0

- IOAudioEngine[<ptr>]::incrementActiveUserClients() - 1 returns 0

- IOAudioEngine[<ptr>]::startClient(<ptr>) returns 0x0

engine started

bufferSet <ptr>

output clientBuffer <ptr>

+ IOAudioStream[<ptr>]::addClient(<ptr>)

- IOAudioStream[<ptr>]::addClient(<ptr>) returns 0x0

- IOAudioEngineUserClient[<ptr>]::startClient() - 1 returns 0x0

- IOAudioEngineUserClient::externalMethod returns 0x0

+ IOAudioEngineUserClient::externalMethod, selector=0x4, arg0 0x0, arg1 0x0, arg2 0x0 arg3 0x0

scalarInputCount=0x0 structureInputSize 0x0, scalarOutputCount 0x0, structureOutputSize 0x0

+ IOAudioStream[<ptr>]::removeClient(<ptr>)

+-IOAudioStream[<ptr>]::safeLogError kErrorLogDumpCounters mStreamErrorCountsUpdated=0

- IOAudioStream[<ptr>]::removeClient(<ptr>)

+- IOAudioEngine[<ptr>]::decrementActiveUserClients() - 0 returns 0x0

+- IOAudioEngine[<ptr>]::stopClient(<ptr>) returns 0x0

+- IOAudioEngineUserClient[<ptr>]::setOnline(0)

- IOAudioEngineUserClient::externalMethod returns 0x0

+ IOAudioEngineUserClient::externalMethod, selector=0x1, arg0 0x10B9A1000, arg1 0x93, arg2 0x0 arg3 0x0

scalarInputCount=0x2 structureInputSize 0x0, scalarOutputCount 0x0, structureOutputSize 0x0

+ IOAudioEngineUserClient[<ptr>]::unregisterClientBuffer64(0x<ptr>, 0x93)

searching for sourceBuffer 0x10b9a1000

+- IOAudioEngineUserClient[<ptr>]::removeBufferSet(<ptr>)

+ IOAudioStream[<ptr>]::removeClient(<ptr>)

+-IOAudioStream[<ptr>]::safeLogError kErrorLogDumpCounters mStreamErrorCountsUpdated=0

- IOAudioStream[<ptr>]::removeClient(<ptr>)

- IOAudioEngineUserClient::unregisterClientBuffer64 no sourcebuffer returns 0x0

- IOAudioEngineUserClient::externalMethod returns 0x0

+ IOAudioEngine[<ptr>]::stopAudioEngine()

+-IOAudioEngine[<ptr>]::setState(0x0. oldState=0x1)

+ IOAudioDevice[<ptr>]::setIdleAudioSleepTime: sleepDelay = 66fc23ac00

+ IOAudioDevice[<ptr>]::scheduleIdleAudioSleep: idleSleepDelayTime = 66fc23ac00

- IOAudioDevice[<ptr>]::scheduleIdleAudioSleep: idleSleepDelayTime = 66fc23ac00

- IOAudioDevice[<ptr>]::setIdleAudioSleepTime: sleepDelay = 66fc23ac00

+ IOAudioDevice[<ptr>]::audioEngineStopped() - numRunningAudioEngines = 1

+ IOAudioDevice[<ptr>]::scheduleIdleAudioSleep: idleSleepDelayTime = 66fc23ac00

- IOAudioDevice[<ptr>]::scheduleIdleAudioSleep: idleSleepDelayTime = 66fc23ac00

- IOAudioDevice[<ptr>]::audioEngineStopped() - numRunningAudioEngines = 0

- IOAudioEngine[<ptr>]::stopAudioEngine() returns 0x0

+-IOAudioEngine[<ptr>]::setState(0x0. oldState=0)

+ IOAudioDevice[<ptr>]idleAudioSleepHandlerTimer: pendingPowerState = 1, idleSleepDelayTime = 66fc23ac00

+ IOAudioDevice[<ptr>]::initiatePowerStateChange(0) - current = 2 - pending = 1

+ IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 2 - pending = 1

- IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 1 - pending = 1 returns 0x0

+ IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 1 - pending = 1

- IOAudioDevice[<ptr>]::protectedCompletePowerStateChange() - current = 1 - pending = 1 returns 0x0

- IOAudioDevice[<ptr>]::initiatePowerStateChange(0) - current = 1 - pending = 1 returns 0x0

- IOAudioDevice[<ptr>]idleAudioSleepHandlerTimer: pendingPowerState = 1, idleSleepDelayTime = 66fc23ac00