Memory issue

[sc3...@gmail.com]

Hi,

I'm on Linux and using Jack.

I'm creating a drum sequencer with Beads,

using the SamplePlayer object to play the drum sounds.

While the sequencer is running the memory is constantly going up

and eventually also Jack gets into trouble with the cpu load.

I've analysed a heapdump and noticed that the issue is the amount

of float arrays in bufferStore in AudioContext:

My code that is responsible for the issue:

public void messageReceived(Bead message) {

for (File sound : currentSound2data.keySet()) {

DrumPlayerData data = currentSound2data.get(sound);

if (!data.isMute()) {

for (int step : data.getSteps()) {

if (clockCounter == step) {

Gain g = new Gain(beadsJackPlayer.getAudioContext(), JACK_OUTPUTS,

data.getVolume());

SamplePlayer samplePlayer = new SamplePlayer(beadsJackPlayer.getAudioContext(),

SampleManager.sample(sound.getAbsolutePath()));

g.addInput(data.getOutIndex(), samplePlayer);

beadsJackPlayer.getAudioContext().out.addInput(data.getOutIndex(), g,

data.getOutIndex());

}

}

}

}

So for each loop and each step I'm creating a new Gain and a new SamplePlayer.

I've tried working around it by having having for each step 1 Gain and 1 SamplePlayer object and then setting the Gain and setting the sample, but then I get only sound during one loop.

Anybody with some help ?

Thanks

Regards

[Ollie Bown]

Yeah you’re adding these things but not destroying them, so they keep mounting up.

A SamplePlayer will destroy itself once it plays the sample, but a Gain object will not.

Something like the following will ensure that the Gain gets killed too:

samplePlayer.addKillListener(new KillTrigger(g)); 

Ollie

On 27 Aug 2020, at 9:54 am, sc3...@gmail.com <sc3...@gmail.com> wrote:

Hi,

I'm on Linux and using Jack.

I'm creating a drum sequencer with Beads,

using the SamplePlayer object to play the drum sounds.

While the sequencer is running the memory is constantly going up

and eventually also Jack gets into trouble with the cpu load.

I've analysed a heapdump and noticed that the issue is the amount

of float arrays in bufferStore in AudioContext:<Screenshot_20200827_013522.png>

My code that is responsible for the issue:

public void messageReceived(Bead message) {

for (File sound : currentSound2data.keySet()) {

DrumPlayerData data = currentSound2data.get(sound);

if (!data.isMute()) {

for (int step : data.getSteps()) {

if (clockCounter == step) {

Gain g = new Gain(beadsJackPlayer.getAudioContext(), JACK_OUTPUTS,

data.getVolume());

SamplePlayer samplePlayer = new SamplePlayer(beadsJackPlayer.getAudioContext(),

SampleManager.sample(sound.getAbsolutePath()));

g.addInput(data.getOutIndex(), samplePlayer);

beadsJackPlayer.getAudioContext().out.addInput(data.getOutIndex(), g,

data.getOutIndex());

}

}

}

}

So for each loop and each step I'm creating a new Gain and a new SamplePlayer.

I've tried working around it by having having for each step 1 Gain and 1 SamplePlayer object and then setting the Gain and setting the sample, but then I get only sound during one loop.

Anybody with some help ?

Thanks

Regards

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<Screenshot_20200827_013522.png>

[sc3...@gmail.com]

Thank you Ollie,

samplePlayer.setKillListener(new KillTrigger(g)); 

fixes the issue indeed.

Regards.