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On 09/05/2012 09:24 PM, Kevin Cosgrove wrote:

quoted text
>

> Xrunning system says:

>

>   0 [PCH            ]: HDA-Intel - HDA Intel PCH

>                        HDA Intel PCH at 0xf7e20000 irq 70

>   1 [M1010          ]: ICE1712 - M Audio Delta 1010

>                        M Audio Delta 1010 at 0xa040, irq 16

>   2 [NVidia         ]: HDA-Intel - HDA NVidia

>                        HDA NVidia at 0xf7080000 irq 17

>

> Fine system says:

>

>   0 [Intel          ]: HDA-Intel - HDA Intel

>                        HDA Intel at 0xfbff8000 irq 30

>   1 [M1010          ]: ICE1712 - M Audio Delta 1010

>                        M Audio Delta 1010 at 0xec00, irq 17

>

> I'm using the Delta 1010 cards on each system with Jack & Ardour.

>

Hello Kevin, thanks for the results!
Ok, that looks good, so it's about a Delta 1010 card which uses the

snd_ice1712 kernel module.
>> cat /proc/interrupts

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>   16:      56322          0          0          0          0          0          0          0   IO-APIC-fasteoi   ahci, ehci_hcd:usb1, firewire_ohci, snd_ice1712, nvidia

There you go, looks kinda busy there. Looks a bit like the situation on

my notebook:
  16:     320312         30   IO-APIC-fasteoi   uhci_hcd:usb3, mmc0,

firewire_ohci, jmb38x_ms:slot0, eth1, nvidia
But I manage to use to run a FireWire audio card just fine on this

notebook so there's still hope for your Delta 1010 ;)
>

quoted text
> Fine system says:

>    17:          0          0          0          0   IO-APIC-fasteoi   ICE1712

>

Here it's sitting on it's own interrupt so it'll probably run fine
>> cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

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>

> Xrunning system says:

>

>    ondemand

>    ondemand

>    ondemand

>    ondemand

>    ondemand

>    ondemand

>    ondemand

>    ondemand

>

Nice, 4 cores and hyperthreading? Or really 8 cores? But the ondemand

governor might be a culprit (I say *might*, I'm still not 100% sure in

how far the ondemand scaling governor affects JACK's performance).
>> More information on tweaking your setup:

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>> http://wiki.linuxmusicians.com/doku.php?id=system_configuration

>

> Excellent resource.  I was also going to try installing the CCRMA

> RT kernel and any "accessories" it might require.

>

Then also install rtirq (or rtirq-init) and check the section in the

Wiki on rtirq. Make sure you put snd_ice1712 in the list of softirqs

that need to get prio. Put it first or second in the list. This will

free it from the burden of having to share its hardware interrupt with

all the other stuff. You could also try moving the Delta 1010 to another

slot, if possible a slot with a free IRQ. that would be the best option.
Best,
Jeremy
> Thanks much!

quoted text
>

> --

> Kevin

>

>

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