JACK - no xruns until wham! 1500 xruns in a row...

[Axisential]

I have a interesting problem where with lower buffer settings (aiming for low latency for live use) I sometimes will get 1500-2000 xruns in a row - basically the sounds will lock up for 10-15 seconds. Outside of that tho, no clicks or pops or anything.

I've tried with two different class compliant USB interfaces (no difference). Intel i7 with 8GB of RAM. Dell e6440 fwiw...

Is there any logging I can look at to start to figure out what's causing this?

Things tried so far -
* Increase buffer size - lockups still happen, just less frequently.
* Hardware switch to turn off wifi - no difference
* RT kernel (and double check I'm in the audio group - yes!) - no difference

[bluebell]

I guess something with a higher priority is running during the xruns time, maybe excessive swapping/paging. You could try to "sudo swapoff -a" and see if there's a difference.

[Axisential]

I guess something with a higher priority is running during the xruns time, maybe excessive swapping/paging. You could try to "sudo swapoff -a" and see if there's a difference.

Thanks, will give that a crack. Swap should reactivate after reboot with that command yes?

[bluebell]

I guess something with a higher priority is running during the xruns time, maybe excessive swapping/paging. You could try to "sudo swapoff -a" and see if there's a difference.

Thanks, will give that a crack. Swap should reactivate after reboot with that command yes?

No reboot needed.

"sudo swapoff -a" deactivates swap.
"sudo swapon -a" activates it again.

With "free" you can display its use.