Search found 293 matches

by Jack Winter
Tue Dec 11, 2018 7:22 pm
Forum: System Tuning and Configuration
Topic: Standard test needed to benchmark XRUNs
Replies: 13
Views: 315

Re: Standard test needed to benchmark XRUNs

IMO, the big question is what is an xrun, and what is dsp load.. :) The basic issue is that calculating the audio has a deadline, if it's not finished on time (minus overhead) there is a dropout/glitch/xrun. The deadline can be calculate by buffersize / samplerate. The dsp load is an average given b...
by Jack Winter
Wed Dec 05, 2018 11:22 am
Forum: System Tuning and Configuration
Topic: RT MIDI
Replies: 47
Views: 864

Re: RT MIDI

Just for the context, IIRC it takes approximately 1ms to send a midi on msg (30 bits at 31.25 Kbaud).
by Jack Winter
Mon Dec 03, 2018 7:47 pm
Forum: System Tuning and Configuration
Topic: XRUNS ... but why?
Replies: 30
Views: 485

Re: XRUNS ... but why?

Another observation, I think you said that dsp load peaks at about 85% ? If so, maybe you are just exceeding what is possible in ardour with the midi data and plugins you have chosen. Dsp load is an average reported by jack, which means that peaks could be higher.. IIRC one ought to not exceed 80-90...
by Jack Winter
Mon Dec 03, 2018 6:47 pm
Forum: System Tuning and Configuration
Topic: XRUNS ... but why?
Replies: 30
Views: 485

Re: XRUNS ... but why?

A follow up question :) When the xruns happen, is the midi inside of ardour only, or does it include a physical midi keyboard, other jack clients, etc? Edit: What I'm getting at is, are the xruns caused by ardour or a plugin it hosts, or some external factor related to JACK? I'm not sure what module...
by Jack Winter
Mon Dec 03, 2018 6:39 pm
Forum: System Tuning and Configuration
Topic: XRUNS ... but why?
Replies: 30
Views: 485

Re: XRUNS ... but why?

@lilith Yes I think you have described and configured everything the right way. One observation, the configuration for "nice" in limits.conf strictly isn't needed, but it also won't hurt. Just some old Internet lore that gets propagated. Also maybe best to set the limit of rtprio to 98, as...
by Jack Winter
Sat Dec 01, 2018 9:55 pm
Forum: Linux Distributions & Other Software
Topic: AV Linux takes very long to boot
Replies: 11
Views: 232

Re: AV Linux takes very long to boot

Thank you for the info, I'm not going to try it now, but I will in the future (I'm back to Ubuntu Studio, with everything configured, and of course to discover that despite all my prep efforts I've lost some valuable stuff... it seems an unavoidable risk you get with every reinstall)... I keep my h...
by Jack Winter
Sat Dec 01, 2018 9:43 pm
Forum: System Tuning and Configuration
Topic: Standard test needed to benchmark XRUNs
Replies: 13
Views: 315

Re: Standard test needed to benchmark XRUNs

lilith wrote:I have a test running with the RT kernel and discussed the results with JackWinter at IRC. There is obviously no problem. My maximum latency is 50 microseconds even with 100% CPU usage.


Then the RT kernel is doing it's job well.
by Jack Winter
Wed Nov 28, 2018 7:47 pm
Forum: Marketplace
Topic: There's now a U-he linux forum at KVR
Replies: 22
Views: 520

Re: There's now a U-he linux forum at KVR

I think presswerk is excellent, well worth checking out!
by Jack Winter
Wed Nov 28, 2018 11:01 am
Forum: Plugins, Effects and Instruments
Topic: Sonarworks Headphone Calibration Plugin
Replies: 149
Views: 9101

Re: Sonarworks Headphone Calibration Plugin

Ah indeed, strange don't think I've ever seen that before. Good to keep in mind for the future.

Thanks!
by Jack Winter
Mon Nov 26, 2018 6:45 pm
Forum: Plugins, Effects and Instruments
Topic: Sonarworks Headphone Calibration Plugin
Replies: 149
Views: 9101

Re: Sonarworks Headphone Calibration Plugin

You can find the latest build by following this link:
http://d38ygt50eys6ee.cloudfront.net/Do ... p86mdV4ygM


This gives me "HTTP Error 404", the reason I asked :)
by Jack Winter
Mon Nov 26, 2018 6:42 pm
Forum: System Tuning and Configuration
Topic: Live mixing with Linux - State of the art 2018
Replies: 47
Views: 1473

Re: Live mixing with Linux - State of the art 2018

Running from RAM would minimize any bottle necks related to disk i/o. I don't think it could in any way lower usable audio latency though. Please let us know if you test! :)

Probably useful to have a usb stick that loads the OS/DAW into RAM for using on any computer you come across.
by Jack Winter
Mon Nov 26, 2018 6:34 pm
Forum: System Tuning and Configuration
Topic: 16 sample buffer with Arch Linux
Replies: 17
Views: 575

Re: 16 sample buffer with Arch Linux

Just to be clear : when you wrote 'NVIDIA' you're referring to the nvidia proprietary drivers? Yes, if you don't patch the rt kernel specifically the nvidia proprietary drivers will hang, it's been like that for many years. NVIDIA's solution is to refuse building kernel modules when it detects a rt...
by Jack Winter
Mon Nov 26, 2018 9:51 am
Forum: System Tuning and Configuration
Topic: no audio over HDMI
Replies: 3
Views: 278

Re: no audio over HDMI

You're welcome.

It's an easy thing to overlook, especially since you might only have to do it once on a new install.
by Jack Winter
Sun Nov 25, 2018 7:02 pm
Forum: Plugins, Effects and Instruments
Topic: Sonarworks Headphone Calibration Plugin
Replies: 149
Views: 9101

Re: Sonarworks Headphone Calibration Plugin

@rudolf

Hi, just bought the headphone edition (at your sales :), but not quite sure where to download the latest linux binary?
by Jack Winter
Sun Nov 25, 2018 6:51 pm
Forum: Linux Distributions & Other Software
Topic: AV Linux takes very long to boot
Replies: 11
Views: 232

Re: AV Linux takes very long to boot

Run "dmesg -H" in a terminal to see if it offers any leads.

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