[LAU] (Ardour) How to get rid of delay when recording ? - status so far

[Paul Davis]

This stuff has all been written up with startling depth:

    http://wiki.linuxaudio.org/wiki/system_configuration

On Sun, Feb 14, 2016 at 12:07 PM, jonetsu at teksavvy.com <jonetsu at teksavvy.com
> wrote:

> On Sat, 13 Feb 2016 16:01:57 -0500
> "jonetsu at teksavvy.com" <jonetsu at teksavvy.com> wrote:
>
> > It would be so nice to have no delay at all!
>
> Here is what was done so far.  The test is with jackd -p 128 eg.:
>
> /usr/bin/jackd -T -ndefault -dalsa -dhw:M1010LT -r44100 -p128 -n2
>
> When playing an Ardour session, there is plenty of crackling noise
> still.
>
> kernel: 3.13.0-77-lowlatency
>
> /etc/default/rtirq is:
> #RTIRQ_NAME_LIST="rtc snd usb i8042"
> RTIRQ_NAME_LIST="snd_ice1712"
>
> % ./rtirq start
> Setting IRQ priorities: start [snd_ice1712] irq=18 pid=547 prio=90: OK.
>
> % cat /proc/irq/18/smp_affinity
> f
>
> % echo 2 > /proc/irq/18/smp_affinity
>
> % cat /proc/interrupts
>         CPU0     CPU1     CPU2    CPU3
>   0:     28        0        0       0  edge      timer
>   1:      3        0        0       0  edge      i8042
>   4:      0        0        0       2  edge
>   8:      0        1        0       0  edge      rtc0
>   9:      0        3        0       0  fasteoi   acpi
>  12:      3        1        0       0  edge      i8042
>  18: 476281   151882   127790   60568  fasteoi   snd_ice1712
>  23:    117    12720     2133      42  fasteoi   ehci_hcd:usb1,
>
> % ./rtirq status
>
>   PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
>    87 FF      90   - 130  0.0 S    irq/8-rtc0
>   547 FF      90   - 130  1.2 S    irq/18-snd_ice1
>
> When playing an Ardour session, lots of these:
>
> JackEngine::XRun: client = mixbus was not finished, state = Running
> JackAudioDriver::ProcessGraphAsyncMaster: Process error
>
>
>
>
>
>
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user at lists.linuxaudio.org
> http://lists.linuxaudio.org/listinfo/linux-audio-user
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linuxaudio.org/pipermail/linux-audio-user/attachments/20160214/225214ad/attachment.html>