Search found 381 matches

by Jack Winter
Mon Apr 27, 2020 4:19 pm
Forum: System Tuning and Configuration
Topic: Realtime priority?
Replies: 26
Views: 815

Re: Realtime priority?

Did you do "regsvr32 wineasio.dll" and "wine64 regsvr32 wineasio.dll" ?
by Jack Winter
Sat Apr 25, 2020 8:38 pm
Forum: System Tuning and Configuration
Topic: Negative value Xruns
Replies: 1
Views: 146

Re: Negative value Xruns

I've seen that too, I suspect that it's a problem with unsigned vs signed in the JACK code.
by Jack Winter
Sat Apr 25, 2020 8:36 pm
Forum: System Tuning and Configuration
Topic: Realtime priority?
Replies: 26
Views: 815

Re: Realtime priority?

FWIW, wineasio has gotten a new maintainer and is at: https://github.com/falktx/wineasio

It's supposed to finally land at https://github.com/wineasio/wineasio someday.
by Jack Winter
Thu Apr 23, 2020 12:28 pm
Forum: Computer Related Hardware
Topic: RT-compatible video card
Replies: 7
Views: 394

Re: RT-compatible video card

Well you can use the NVIDIA driver with a rt kernel, but AFAIK you have to patch it as by default it refuses to install on rt. I suppose we are a very small minority using a rt kernel, so it's not a priority. It used to work without patching, and then when it started hanging the system on a kernel c...
by Jack Winter
Thu Apr 23, 2020 11:09 am
Forum: Computer Related Hardware
Topic: RT-compatible video card
Replies: 7
Views: 394

Re: RT-compatible video card

I can only contribute that the NVIDIA driver is kind of crappy as it increases the kernel scheduling latency (as tested with cyclictest, a test program contained in rt-tests). In normal use the scheduling latency is higher than say the Intel driver, but not too bad. But it spikes pretty badly at som...
by Jack Winter
Wed Jun 19, 2019 2:26 pm
Forum: Computer Related Hardware
Topic: USB Audio Interface JACK Xruns on Linux but not on Windows
Replies: 51
Views: 3606

Re: USB Audio Interface JACK Xruns on Linux but not on Windows

If it's related to a spike in CPU use, try disabling hyperthreading. I've seen a scenario where xorg spiking on a cpu caused xruns at low latency in reaper. It went away when disabling SMT.
by Jack Winter
Thu Jun 06, 2019 9:54 am
Forum: System Tuning and Configuration
Topic: Worse performance when power supply plugged in!
Replies: 50
Views: 2983

Re: Worse performance when power supply plugged in!

No thermal shutdown msgs in the output of dmesg? ;) This is a really curious problem. According to the cyclictest/hwlatdetect results there are no problems with kernel scheduling nor with NMI/SMIs. I'd suggest though to run both for a longer time. Run cyclictest during an entire cycle of, on battery...
by Jack Winter
Thu Jun 06, 2019 9:43 am
Forum: Computer Related Hardware
Topic: USB Audio Interface JACK Xruns on Linux but not on Windows
Replies: 51
Views: 3606

Re: USB Audio Interface JACK Xruns on Linux but not on Windows

Setting the priority of the interrupt is probably easiest done by an utility called rtirq. This is what most people use. I'm a little bit loath at going into details as it's a long discussion if you get into the details of it all. The basic idea is to configure the system so that the interrupt for t...
by Jack Winter
Tue Jun 04, 2019 8:34 am
Forum: System Tuning and Configuration
Topic: Worse performance when power supply plugged in!
Replies: 50
Views: 2983

Re: Worse performance when power supply plugged in!

I meant that maybe i7z could help to show some relation ship between xruns and C/P states, cpu temp, cpu freqs, etc.

I'm still curious if you see any thermal events in the output of dmesg.. :)
by Jack Winter
Sun Jun 02, 2019 3:37 pm
Forum: System Tuning and Configuration
Topic: Worse performance when power supply plugged in!
Replies: 50
Views: 2983

Re: Worse performance when power supply plugged in!

I have gotten cyclictest to work (with smi), too: sudo cyclictest -m -Sp98 -i100 -d0 --smi [sudo] # /dev/cpu_dma_latency set to 0us policy: fifo: loadavg: 1.70 1.59 1.38 2/591 7902 T: 0 ( 7897) P:98 I:100 C: 222798 Min: 1 Act: 3 Avg: 3 Max: 19 SMI: 0 T: 1 ( 7898) P:98 I:100 C: 222746 Min: 1 Act: 6 ...
by Jack Winter
Sun Jun 02, 2019 8:34 am
Forum: Computer Related Hardware
Topic: USB Audio Interface JACK Xruns on Linux but not on Windows
Replies: 51
Views: 3606

Re: USB Audio Interface JACK Xruns on Linux but not on Windows

Do you have the possibility to try with an onboard intel GPU? IME, nvidia with the lowlatency kernel has quite a lot of delay in the kernel thread scheduling. Also make sure that you set the priorities right for your soundcard (usb hub) interrupt and audio threads (so that they don't get interrupted...
by Jack Winter
Sat May 18, 2019 6:58 am
Forum: Plugins, Effects and Instruments
Topic: Installing Komplete / Native Access
Replies: 5
Views: 748

Re: Installing Komplete / Native Access

It shouldn't add any latency. Due to switching between processes and needing to transfer data from one process to another, it will take longer to calculate the audio data though. This will increase the DSP load, so might mean that you have to use a bigger buffer size to avoid xruns. IMO using window...
by Jack Winter
Wed May 15, 2019 7:53 am
Forum: System Tuning and Configuration
Topic: [SOLVED] How can I eliminate pop sounds from alsa_in and zita-a2j working on ALSA loopback?
Replies: 53
Views: 3912

Re: How can I eliminate pop sounds from alsa_in and zita-a2j working on ALSA loopback?

Did you try the builtin clients instead of alsa_in/out? On JACK1 the -A parameter and on JACK2 the audioadapter client? No idea if they would work better, but maybe worth a try.