Linux Audio Conference 2011
Low-Latency Audio on Linux by Means of Real-Time Scheduling
Tommaso Cucinotta, Dario Faggioli, Giacomo Bagnoli

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In this paper, we propose to use resource reservations scheduling and feedback-based allocation techniques for the provisioning of proper timeliness guarantees to audio processing applications. This allows real-time audio tasks to meet the tight timing constraints characterizing them, even if other interactive activities are present in the system. The JACK sound infrastructure has been modified, leveraging the real-time scheduler present in the Adaptive Quality of Service Architecture (AQuoSA). The effectiveness of the proposed approach, which does not require any modification to existing JACK clients, is validated through extensive experiments under different load conditions.

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