![]() ![]() If the high CPU usage only shows on Linux, it is a platform specific issue which most likely points a problem with the UI code (on either side). You would have to ask the devs.)Īlso, it may be interesting to test SonoBus with Ardour on non-Linux platforms and compare the results. (It has been resolved in the meantime, but I don't know what the problem was. I have seen similar high CPU usage even on Windows in REAPER with some earlier versions of the IEM ambisonics plugin suite ( ). I guess this is an issue with JUCE and/or Ardour's UI handling. VST3 also has a rather strict seperation between GUI and audio processing, at least from the SDK point of view, but maybe JUCE does some sketchy things. I have wondered if SonoBus would work better as LV2 plugin inside Ardour due to LV2's separation of GUI vs audio processing. Even if the plugin is running all the time, there shouldn't be such high CPU usage. I wonder if maybe this aspect of Ardour's design is contributing to that high CPU usage somehow Out of curiosity I'm going to reboot to windows and see if I notice similar CPU usage. There is a fork of JUCE that can build LV2: ) (I have wondered if SonoBus would work better as LV2 plugin inside Ardour due to LV2's separation of GUI vs audio processing. I wonder if maybe this aspect of Ardour's design is contributing to that high CPU usage somehow. It might be less energy efficient than switching them off when there is no input, but that way there are no surprises where your dynamic usage suddenly goes over the available CPU time in the middle of a mix. The Ardour developer says Ardour has a deliberate design to always run all plugins even without input:Īrdour runs all it plugins continuously by design. But then opening the GUI results in Ardour using around 75% of a core and Xorg usage going up from around 1% to an ridiculous 60% of a core. After I add the Sonobus plugin, Ardour usage jumps to 13% of a core. On my Arch Linux 12-core desktop, on a fresh start of Ardour with a new project without any plugins the top command shows Ardour using around 4% of a core. However, there are hundreds of plugins (effects and instruments) that you can use with Ardour, many of which are available at no charge. And Alt-tabbing out and then tabbing back in a minute later will cause it to hang forever. Using Plugins with Ardour Ardour does not come with any built-in signal processors of its own. ![]() I can verify it is possible to use SonoBus VST in Ardour 6.6 on Linux, but it seems its GUI can be very unresponsive. ![]()
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