Video Buffer Management and MPEG Video Buffer Verifier

2005 ◽  
pp. 155-171
Keyword(s):  
Buffer Management

Improved Jitter Buffer Management for WebRTC

2021 ◽  
Vol 17 (1) ◽  
pp. 1-20
Author(s):  
Yusuf Cinar ◽  
Peter Pocta ◽  
Desmond Chambers ◽  
Hugh Melvin
Keyword(s):  
Voice Quality ◽  
Buffer Management ◽  
Voice Over Ip ◽  
The Core ◽  
Management Algorithm ◽  
Core Concepts ◽  
Novel Strategy

This work studies the jitter buffer management algorithm for Voice over IP in WebRTC. In particular, it details the core concepts of WebRTC’s jitter buffer management. Furthermore, it investigates how jitter buffer management algorithm behaves under network conditions with packet bursts. It also proposes an approach, different from the default WebRTC algorithm, to avoid distortions that occur under such network conditions. Under packet bursts, when the packet buffer becomes full, the WebRTC jitter buffer algorithm may discard all the packets in the buffer to make room for incoming packets. The proposed approach offers a novel strategy to minimize the number of packets discarded in the presence of packet bursts. Therefore, voice quality as perceived by the user is improved. ITU-T Rec. P.863, which also confirms the improvement, is employed to objectively evaluate the listening quality.

scholarly journals AOIO: Application Oriented I/O Optimization for Buffer Management

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 573
Author(s):  
Xiaochang Li ◽  
Zhengjun Zhai ◽  
Xin Ye
Keyword(s):  
System Performance ◽  
Simulation Experiment ◽  
Buffer Management ◽  
Input Output ◽  
Output Data ◽  
Program Counter ◽  
Efficient Management ◽  
Management Scheme ◽  
Buffer Cache ◽  
Management Schemes

Emerging scale-out I/O intensive applications are broadly used now, which process a large amount of data in buffer/cache for reorganization or analysis and their performances are greatly affected by the speed of the I/O system. Efficient management scheme of the limited kernel buffer plays a key role in improving I/O system performance, such as caching hinted data for reuse in future, prefetching hinted data, and expelling data not to be accessed again from a buffer, which are called proactive mechanisms in buffer management. However, most of the existing buffer management schemes cannot identify data reference regularities (i.e., sequential or looping patterns) that can benefit proactive mechanisms, and they also cannot perform in the application level for managing specified applications. In this paper, we present an A pplication Oriented I/O Optimization (AOIO) technique automatically benefiting the kernel buffer/cache by exploring the I/O regularities of applications based on program counter technique. In our design, the input/output data and the looping pattern are in strict symmetry. According to AOIO, each application can provide more appropriate predictions to operating system which achieve significantly better accuracy than other buffer management schemes. The trace-driven simulation experiment results show that the hit ratios are improved by an average of 25.9% and the execution times are reduced by as much as 20.2% compared to other schemes for the workloads we used.

Packet Scheduling

2021 ◽  
Vol 52 (2) ◽  
pp. 72-84
Author(s):  
Pavel Veselý
Keyword(s):  
Packet Scheduling ◽  
Golden Ratio ◽  
Buffer Management ◽  
Competitive Algorithm ◽  
Its Analysis ◽  
Open Questions

Online packet scheduling with deadlines is one of the fundamental models in buffer management. Recently, the author together with Chrobak, Jez, and Sgall (SODA 2019) designed an optimal ϕ-competitive algorithm for this problem, where ϕ ≈1.618 is the golden ratio. In this column, we sketch ideas that led us to the development of this algorithm and outline the concepts in its analysis. We also highlight open questions in packet scheduling.

Design and Implementation of Buffer Control in EoS System

2013 ◽  
Vol 411-414 ◽  
pp. 684-687
Author(s):  
Wei He ◽  
Yan Gan Zhang ◽  
Xue Guang Yuan ◽  
Jin Nan Zhang
Keyword(s):  
Buffer Management ◽  
Transport Rate ◽  
Optimization Approach ◽  
Data Transport ◽  
Design And Implementation ◽  
End To End ◽  
Buffer Control ◽  
Improved Model ◽  
Eos System

We propose an optimization approach to EoS (Ethernet over SDH) buffer control which the objective is to dynamically adjust the EoS buffer management registers. We will present the improved model of the traffic buffer management based on embedded MCU to control the SDRAM of the EoS chip, and setup the end-to-end system to illustrate the feasibility and advantage of the solution in buffer management when the data transport rate suddenly exceed the bandwidth of Ethernet port.

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