2017-08-18 12:38 GMT+02:00 Ralf Mardorf <ralf.mardorf@xxxxxxxxxxxxx>:
On Fri, 2017-08-18 at 11:54 +0200, Jaromír Mikeš wrote:
> irqbalance should be disabled?
"Disabling the irqbalance daemon
This daemon is enabled by default and periodically forces interrupts to
be handled by CPUs in an even, fair manner. However in realtime
deployments, applications are typically dedicated and bound to specific
CPUs, so the irqbalance daemon is not required." - https://access.redhat
.com/documentation/en-
US/Red_Hat_Enterprise_MRG/1.3/html/Realtime_Tuning_Guide/sec t-
Realtime_Tuning_Guide-General_System_Tuning-
Interrupt_and_Process_Binding.html
Is there some way how to disable it on starting jack and enable on quilt jack?
I already using scripts for running PA via jack ...
But here it looks like you need root to switch it off :(
> I have different output for rtirq status with kernel as one is only PREEMPT not RT
> Seems to be that rtirq need RT kernel to work fully.
No, as already pointed out, if you should use a kernel without the rt
patch, you need to add "threadirqs" to the boot options.
Great fixed!
You are giving snd_hda_ the highest prio. Don't do it. It much likely is> /etc/init.d/rtirq status
>
> PID CLS RTPRIO NI PRI %CPU STAT COMMAND
> 424 FF 90 - 130 0.0 S irq/31-snd_hda_
> 425 FF 85 - 125 6.0 S irq/19-ehci_hcd
> 429 FF 85 - 125 0.1 S irq/16-uhci_hcd
> 421 FF 84 - 124 0.0 S irq/23-ehci_hcd
> 431 FF 84 - 124 0.0 S irq/17-uhci_hcd
> 432 FF 83 - 123 0.0 S irq/18-uhci_hcd
> 420 FF 82 - 122 0.0 S irq/20-uhci_hcd
> 423 FF 81 - 121 0.0 S irq/21-uhci_hcd
> 66 FF 80 - 120 0.0 S irq/1-i8042
> 428 FF 80 - 120 0.0 S irq/22-uhci_hcd
> 65 FF 79 - 119 0.0 S irq/12-i8042
> 39 FF 50 - 90 0.0 S irq/9-acpi
> 57 FF 50 - 90 0.0 S irq/24-PCIe PME
> 58 FF 50 - 90 0.0 S irq/25-PCIe PME
> 59 FF 50 - 90 0.0 S irq/26-PCIe PME
> 60 FF 50 - 90 0.0 S irq/27-PCIe PME
> 61 FF 50 - 90 0.0 S irq/24-pciehp
> 62 FF 50 - 90 0.0 S irq/25-pciehp
> 63 FF 50 - 90 0.0 S irq/26-pciehp
> 64 FF 50 - 90 0.0 S irq/27-pciehp
> 67 FF 50 - 90 0.0 S irq/8-rtc0
> 105 FF 50 - 90 0.5 S irq/14-ata_piix
> 106 FF 50 - 90 0.0 S irq/15-ata_piix
> 408 FF 50 - 90 0.0 S irq/28-mei_me
> 409 FF 50 - 90 0.0 S irq/29-i915
> 418 FF 50 - 90 0.0 S irq/17-rtl_pci
> 419 FF 50 - 90 0.0 S irq/16-yenta
> 436 FF 50 - 90 0.0 S irq/23-i801_smb
> 610 FF 50 - 90 0.0 S irq/17-firewire
> 635 FF 50 - 90 0.0 S irq/18-mmc0
> 640 FF 50 - 90 0.0 S irq/18-r592
> 642 FF 50 - 90 0.0 S irq/18-r852
> 1061 FF 50 - 90 0.0 S irq/30-eth0
> 636 FF 49 - 89 0.0 S irq/18-s-mmc0
> 3 TS - 0 19 0.1 S ksoftirqd/0
> 22 TS - 0 19 0.1 S ksoftirqd/1
an onboard device you aren't using for real-time audio.
You are giving i8042 real-time priority, don't give keyboard and mouse
this priority.
Simply edit /etc/conf.d/rtirq RTIRQ_NAME_LIST to:
RTIRQ_NAME_LIST="usb"
After that don't restart rtirq, restart the computer.
Ok ... BTW what is rtc?
There was RTIRQ_NAME_LIST="rtc snd usb i8042"
And onemore question here ...
I have also PCIe RME card which I would like to use sometimes ... any chance to give high priority to it?
irq/16, irq/23, irq/17 and irq/18 share IRQs, so consider to use the
ehci (USB2) port using IRQ 19. Avoid using uhci (USB1) or the ehci
(USB2) port hat shares the IRQ.
I have only 3x USB ports on my laptop :( it confuse me a bit.
Anyway how can I recognize which one is which?
best regards
mira
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