On recent qemu I switched to emulated usb audio. It works much better than other options I tried (hda, ac97, scream): qemu ... -device usb-audio,audiodev=myaudio \ -audiodev id=myaudio,driver=pa,out.fixed-settings=on,out.frequency=44100,out.channels=2,timer-period=3000 I also use MSI for my nvidia graphics, which helps a lot in games, but might be irrelevant to audio crackle improvements I've got with usb audio.
On Mon, Sep 21, 2020 at 12:53 AM Patrick O'Callaghan <p...@usb.ve> wrote: > > On Sun, 2020-09-20 at 13:29 +0000, leeste...@pm.me wrote: > > On Sunday, September 20, 2020 2:47 PM, Patrick O'Callaghan <p...@usb.ve> > > wrote: > > > > > On Sat, 2020-09-19 at 16:38 +0000, Zir Blazer wrote: > > > > > > > Note that while MSI Interrupts are always better, in many cases they > > > > are not enabled by default or are broken somehow. I see often in PCI > > > > Passthrough scenarios for Windows with people complaining about some > > > > type of audio stuttering that in many cases gets solved by explicitly > > > > enabling MSI, as the OS or the Drivers appears to not always do so. So > > > > even when using modern OSes legacy PCI Interrupts performance may be > > > > important. > > > > > > Slightly OT: I sometimes get audio stutter on Windows passthrough. How > > > do I enable MSI interrupts? > > > > Please have a look at > > https://vfio.blogspot.com/2014/09/vfio-interrupts-and-how-to-coax-windows.html > > Or > > https://forums.guru3d.com/threads/windows-line-based-vs-message-signaled-based-interrupts-msi-tool.378044/ > > Thanks, I'll take a look at those. > > poc > > _______________________________________________ > vfio-users mailing list > vfio-users@redhat.com > https://www.redhat.com/mailman/listinfo/vfio-users > _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
