Ok thanks. The code is really simple and i don't think it can be optimized. Is there other linux OS i can try ? Thanks again.
Le mer. 22 juil. 2020 à 19:12, Marcus D. Leech via USRP-users < usrp-users@lists.ettus.com> a écrit : > On 07/22/2020 12:56 PM, David Carsenat via USRP-users wrote: > > Hello, I have made a c++ code which sends samples in the main function > > and receives samples in a thread launched in this main function. > > I have read that we can set the real time priority with the > > set_thread_priority function. > > I have tried to call this function (with parameters (1,true) inside > > the main function but it doesn't seem to change the priority of the > > executable. When I launch another application, I have lots of U and O. > > > > Do you have an idea how to achieve what I want ? i.e. allocate almost > > all computer resources to my uhd program ? What is the best way ? > > I have already tuned my ubuntu with advice given on Ettus site.( > > cpu-freq set etc...) > > > > Many thanks > > > > David > > > In general, applications have only very-rough control over the behavior > of the scheduler. This is true in most general-purpose operating system > environments, whether it's Windows, Linux, *BSD, MacOS, etc. > > If you've played with priorities, and starting up other programs causes > OU to happen, you should probably consider: > > (A) Optimizing your code -- find out where the hot-spots are, and see if > they can be improved > (B) Choosing a faster CPU > > The CPU usage of a DSP flow is roughly proportional to: > > inherent-per-sample-complexity X sample-rate > > Can you lower the sample rate and still achieve what you need to > achieve? Can you improve the main-path per-sample complexity? > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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