Re: Improve performance and reduce latency
Posted: Mon Oct 22, 2018 1:08 pm
uhm, i tried doing that too, without any good results. The thing is that I am having the same results on audio aimed distributions like ubuntu studio (which by default, runs xfce). What is strange is that the JACK developers, claim on their website that Jack does not add any latency WHATSOEVER , just a little more processing on the cpu, less than 1% as they say.CrocoDuck wrote:It is actually a good thing to rehearse this stuff. I was lagging behind not having done this for a while.steinwayer wrote: First of all, thanks SOOO MUCH for all the help and effort you are putting into helping me find the perfect config.
Uhm... that's not supposed to happen.steinwayer wrote:So, as far as the KX Studio repos go, you should know that, at least in my case (tried with several distros as well) the kx studio repos tend to break the entire os generating conflicts of versions, so when i can, i always avoid adding repos to my distro.
Yes it is. I think in this case though measurements are better suited. For example, due to how Mac OS works, normally working at sample rate Fs and buffer size Bs results in additional latency of maybe 30 samples with respect Linux. This is due to how Core Audio works.steinwayer wrote:Don't get me wrong, i already like the configuration i have, i can record without efforts multiple tracks even utilizing heavy samplers like Kontakt. It's just that I am trying to dig deep into linux audio configuration in order to demonstrate that it's actually possible to achieve mac/win level latency and recording setup also on Linux. And i still think it's possible.
Probably the best way to compare OS performance is set up various configurations of sample rate a buffer size, measure latency, and then measure stability somehow, as a function of load. That would be a huge task, though. It would be very interesting to do, though.
Not sure whether we should expect an issue. I think it is most likely just the additional overhead of JACK. In this case, slimming down your system by using a light weight window manager, like Open Box, and possibly disabling not needed services can help. Switching to from XFCE to LXDE few years ago made a huge difference for me. This is another path you can go first if you don't want to test a rt kernel.steinwayer wrote:I think that must be an issue of some sort with jack (or maybe with the way jack interacts with alsa settings) i tried uninstalling jackd2 in favor of jackd1 just as a test, but apparently if i do that, apt-get wants to remove also bitwig and a bunch of stuff that i actually need , so that's not happening
Not sure where to find RT kernels for Ubuntu. Maybe someone else can fill this gap.steinwayer wrote:Ideally, if i could find the deb files to just install in the distro and try how it works, it would be much better.