On Tue, 2012-09-25 at 00:12 +0200, Joakim Hernberg wrote: > On Mon, 24 Sep 2012 23:06:57 +0200 > Ralf Mardorf <ralf.mard...@alice-dsl.net> wrote: > > > 294 FF 85 - 125 0.0 S irq/18-snd_hdsp > > 122 FF 50 - 90 0.0 S irq/18-ohci_hcd > > 126 FF 50 - 90 0.0 S irq/18-ohci_hcd > > 303 FF 50 - 90 0.0 S irq/18-radeon > > 337 FF 50 - 90 0.0 S irq/18-nouveau > > This isn't looking all that good.. Afaik, you really ought to prefer > having that snd_hdsp on it's own irq, but if not, then at least you > need to raise the priority to around the same for the rest of the > threads on the same irq...
I guess it's impossible to change the IRQ. Assumed that rtirq fits to the current kernel version, it's easy to raise the priority of the others that share IRQ 18 (but it's not wanted). Note! In the past I never run into this trouble: http://www.digipedia.pl/usenet/thread/11091/63/ Btw. there's no audio load, so xruns are really strange. The config was [spinymouse@archlinux ~]$ grep RTIRQ_NAME_LIST /etc/conf.d/rtirq RTIRQ_NAME_LIST="rtc snd_hdsp snd_ice1 snd usb i8042" New trial (the RMR card still get xruns) [spinymouse@archlinux ~]$ sudo cpupower frequency-set -g performance [spinymouse@archlinux ~]$ /etc/rc.d/rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 59 FF 90 - 130 0.0 S irq/8-rtc0 298 FF 85 - 125 0.0 S irq/18-snd_hdsp 331 FF 85 - 125 0.0 S irq/20-snd_ice1 333 FF 85 - 125 0.0 S irq/21-snd_ice1 293 FF 80 - 120 0.0 S irq/18-radeon 106 FF 75 - 115 0.1 S irq/16-ohci_hcd 119 FF 74 - 114 0.0 S irq/17-ohci_hcd 130 FF 73 - 113 0.0 S irq/17-ohci_hcd 104 FF 70 - 110 0.0 S irq/19-ehci_hcd 57 FF 65 - 105 0.0 S irq/1-i8042 20 FF 50 - 90 0.0 S irq/9-acpi 109 FF 50 - 90 0.8 S irq/22-ahci 121 FF 50 - 90 0.0 S irq/14-pata_ati 122 FF 50 - 90 0.0 S irq/15-pata_ati 128 FF 50 - 90 0.0 S irq/18-ohci_hcd 132 FF 50 - 90 0.0 S irq/18-ohci_hcd 285 FF 50 - 90 0.0 S irq/7-parport0 291 FF 50 - 90 0.2 S irq/22-firewire 583 FF 50 - 90 0.0 S irq/42-eth0 3 FF 1 - 41 0.3 S ksoftirqd/0 11 FF 1 - 41 0.3 S ksoftirqd/1 [spinymouse@archlinux ~]$ grep RTIRQ_NAME_LIST /etc/conf.d/rtirq #RTIRQ_NAME_LIST="rtc snd_hdsp snd_ice1 snd usb i8042" RTIRQ_NAME_LIST="rtc snd radeon ohci_hcd usb i8042" [spinymouse@archlinux ~]$ jackd --sync -Xalsarawmidi -dalsa -r48000 -p256 jackdmp 1.9.8 [spinymouse@archlinux ~]$ jack_midi_latency_test -m 3 -s 8192 -t 5 "system:1-1 HDSPMx579bcc MIDI 1 1 out" "system:1-1 HDSPMx579bcc MIDI 1 1 in" Waiting for connections ... Waiting for test completion ... Reported out-port latency: 5.33-5.33 ms (256-256 frames) Reported in-port latency: 5.33-5.33 ms (256-256 frames) Average latency: 11.68 ms (560.54 frames) Lowest latency: 11.65 ms (559 frames) Highest latency: 11.75 ms (564 frames) Peak MIDI jitter: 0.10 ms (5 frames) Average MIDI jitter: 0.01 ms (0.05 frames) Jitter Plot: 0.0 - 0.1 ms: 8192 Latency Plot: 11.6 - 11.7 ms: 7822 11.7 - 11.8 ms: 370 Messages sent: 8192 Messages received: 8192 [spinymouse@archlinux ~]$ jack_midi_latency_test -m 3 -s 8192 -t 5 "system:1-1 HDSPMx579bcc MIDI 1 1 out" "system:1-1 HDSPMx579bcc MIDI 1 1 in" Waiting for connections ... Waiting for test completion ... Reported out-port latency: 5.33-5.33 ms (256-256 frames) Reported in-port latency: 5.33-5.33 ms (256-256 frames) Average latency: 11.69 ms (560.64 frames) Lowest latency: 11.67 ms (560 frames) Highest latency: 11.75 ms (564 frames) Peak MIDI jitter: 0.08 ms (4 frames) Average MIDI jitter: 0.03 ms (0.06 frames) Jitter Plot: 0.0 - 0.1 ms: 8186 > 10 ms: 6 Latency Plot: 11.6 - 11.7 ms: 7709 11.7 - 11.8 ms: 477 > 21.6 ms: 6 Messages sent: 8192 Messages received: 8192 Xruns: 6 [spinymouse@archlinux ~]$ jack_midi_latency_test -m 3 -s 8192 -t 5 "system:2-1 TerraTec EWX24/96 MIDI 1 out" "system:2-1 TerraTec EWX24/96 MIDI 1 in" Waiting for connections ... Waiting for test completion ... Reported out-port latency: 5.33-5.33 ms (256-256 frames) Reported in-port latency: 5.33-5.33 ms (256-256 frames) Average latency: 11.69 ms (561.05 frames) Lowest latency: 11.67 ms (560 frames) Highest latency: 11.75 ms (564 frames) Peak MIDI jitter: 0.08 ms (4 frames) Average MIDI jitter: 0.00 ms (0.01 frames) Jitter Plot: 0.0 - 0.1 ms: 8192 Latency Plot: 11.6 - 11.7 ms: 7771 11.7 - 11.8 ms: 421 Messages sent: 8192 Messages received: 8192 [spinymouse@archlinux ~]$ jack_midi_latency_test -m 3 -s 8192 -t 5 "system:2-1 TerraTec EWX24/96 MIDI 1 out" "system:2-1 TerraTec EWX24/96 MIDI 1 in" Waiting for connections ... Waiting for test completion ... Reported out-port latency: 5.33-5.33 ms (256-256 frames) Reported in-port latency: 5.33-5.33 ms (256-256 frames) Average latency: 11.69 ms (561.04 frames) Lowest latency: 11.67 ms (560 frames) Highest latency: 11.75 ms (564 frames) Peak MIDI jitter: 0.08 ms (4 frames) Average MIDI jitter: 0.00 ms (0.01 frames) Jitter Plot: 0.0 - 0.1 ms: 8192 Latency Plot: 11.6 - 11.7 ms: 7798 11.7 - 11.8 ms: 394 Messages sent: 8192 Messages received: 8192 Regards, Ralf
