[LAU] limits.conf nice rtprio

[Jaromír Mikeš]

2017-08-18 0:36 GMT+02:00 Ralf Mardorf <ralf.mardorf at alice-dsl.net>:

Hi Ralf,

is it a 1st Gen or 2nd Gen?
>

2nd gen


>
> I've got a 18i20 2nd Gen, -n 2 -p 128 works with my outdated Athlon
> and now with my Celeron without issues. IOW even my new machine hasn't
> got much horsepower.
>
> If irqbalance should be enabled, disable it.


irqbalance should be disabled?



> Did you already test
> different USB ports?
>

Yes I tried ... seems to be very similar on all USB ports

What's the output of
>
>   /path/to/rtirq status
>
> What kernel are you using?
>
> uname -a
>

Actually I am playing with two different kernels which seems to be fine for
RT task and are available from repositories.
I don't want to spend time to build my own kernels ...
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.

Anyway I am getting same performance with both kernels.

4.12.0-8.1-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 4.12-1 (2017-08-17)
x86_64 GNU/Linux

 /etc/init.d/rtirq status

  PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
  654 FF      80   - 120  0.0 S    irq/18-mmc0
   58 FF      50   -  90  0.0 S    irq/28-mei_me
    7 TS       -   0  38  0.0 S    ksoftirqd/0
   18 TS       -   0  38  0.0 S    ksoftirqd/1

-------------------------------------------------------

Linux mira-laptop 4.9.33-rt23avl1 #3 SMP PREEMPT RT Sun Jul 2 21:55:59 EDT
2017 x86_64 GNU/Linux

/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

Let me know if sth could be tweaked.

best regards

mira
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