[Glennbo]

I've got one of my most demanding projects running in REAPER along with all the normal junk I run every day and when I scroll real fast in this editor I can sometimes introduce a gap in audio playback. It doesn't happen very frequently, but enough to see a correlation.

So which of these two lines looks more like what I want for a Behringer UMC1820 on a USB2 port? Old machine, no USB3 ports.

RTIRQ_NAME_LIST="rtc ehci snd"

or

RTIRQ_NAME_LIST="ehci_hcd"



Using RTIRQ_NAME_LIST="ehci_hcd" I was getting this.

PID CLS RTPRIO NI PRI %CPU STAT COMMAND
103 FF 95 - 135 0.0 S irq/16-ehci_hcd
104 FF 94 - 134 0.1 S irq/23-ehci_hcd
48 FF 50 - 90 0.0 S irq/9-acpi
106 FF 50 - 90 0.0 S irq/12-i8042
107 FF 50 - 90 0.0 S irq/1-i8042
108 FF 50 - 90 0.0 S irq/8-rtc0
179 FF 50 - 90 0.0 S irq/19-pata_jmi
186 FF 50 - 90 0.8 S irq/29-ahci[000
205 FF 50 - 90 0.0 S irq/18-ahci[000
524 FF 50 - 90 0.0 S irq/17-snd_hda_
528 FF 50 - 90 0.0 S irq/16-snd_ice1
939 FF 50 - 90 0.0 S irq/30-enp2s0
949 FF 50 - 90 0.0 S irq/31-nvidia
950 FF 49 - 89 0.0 S irq/31-s-nvidia
7 TS - 0 19 0.2 S ksoftirqd/0
17 TS - 0 19 0.2 S ksoftirqd/1
23 TS - 0 19 0.1 S ksoftirqd/2
29 TS - 0 19 0.2 S ksoftirqd/3

Trying RTIRQ_NAME_LIST="rtc ehci snd" now I get this.

PID CLS RTPRIO NI PRI %CPU STAT COMMAND
108 FF 95 - 135 0.0 S irq/8-rtc0
103 FF 94 - 134 0.0 S irq/16-ehci_hcd
104 FF 93 - 133 0.1 S irq/23-ehci_hcd
545 FF 93 - 133 0.0 S irq/17-snd_hda_
559 FF 93 - 133 0.0 S irq/16-snd_ice1
48 FF 50 - 90 0.0 S irq/9-acpi
106 FF 50 - 90 0.0 S irq/12-i8042
107 FF 50 - 90 0.0 S irq/1-i8042
189 FF 50 - 90 0.0 S irq/19-pata_jmi
197 FF 50 - 90 1.0 S irq/29-ahci[000
216 FF 50 - 90 0.0 S irq/18-ahci[000
1008 FF 50 - 90 0.0 S irq/30-enp2s0
1020 FF 50 - 90 0.0 S irq/31-nvidia
1021 FF 49 - 89 0.0 S irq/31-s-nvidia
7 TS - 0 19 0.2 S ksoftirqd/0
17 TS - 0 19 0.2 S ksoftirqd/1
23 TS - 0 19 0.2 S ksoftirqd/2
29 TS - 0 19 0.2 S ksoftirqd/3