Consolidating Streams to Improve DASH Cache Utilisation

نویسندگان

  • Stephen McQuistin
  • Colin Perkins
چکیده

Existing HTTP caches interact poorly with multiple Dynamic Adaptive Streaming over HTTP (DASH) streams of the same content: time and quality differences prevent a complete representation from being cached, reducing hit-ratios. We propose to consolidate near-simultaneous streams based on time or quality, where the improved cache performance makes this worthwhile. We estimate that there is a sufficient number of near-simultaneous streams for our proposed techniques to improve cache hit-ratios.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Improving cache utilisation

Microprocessors have long employed caches to help hide the increasing latency of accessing main memory. The vast majority of previous research has focussed on increasing cache hit rates to improve cache performance, while lately decreasing power consumption has become an equally important issue. This thesis examines the lifetime of cache lines in the memory hierarchy, considering whether they a...

متن کامل

A Fully Pipelined XQuery Processor

We present a high-performance, pull-based streaming processor for XQuery, called XQPull, that can handle many essential features of the language, including general predicates, recursive queries, backward axis steps, and function calls, using a very small amount of caching. Our framework is based on a new type of event streams, called retarded streams, which allow multiple and nested streams to ...

متن کامل

The Impact of Synchronising MPEG Stream on Bandwidth Allocation

An encoded video traac is a correlated and bursty traac with high value of peak to mean ratio (burstiness). For asynchronous transfer mode (ATM) networks, the challenge of QoS guarantees is to allocate an eeective bandwidth for each video connection and a tradeoo should be achieved between improving the network utilisation and providing QoS guarantees. The allocated bandwidth could be based on ...

متن کامل

A Survey of Proxy Caching Mechanisms for Multimedia Data Streams

Although many web caching techniques have been developed to improve Web performance, existing proxy caching schemes do not support the multimedia data stream well. In this paper, we briefly describe the basic characteristics of steaming media caching and traditional web caching and discuss their dissimilarities. Then, we survey the proxy caching mechanisms for multimedia data streams, and final...

متن کامل

Hierarchical Caching and Prefetching for High Performance Continuous Media Servers with Smart Disks

The rapidly emerging smart disk technology introduces additional resources in a computer system (such as embedded drive-level caches and powerful controllers) the parallel exploitation of which can drastically improve the performance of applications. This paper contributes algorithms which exploit these resources to improve the performance of continuous media servers. Performance is measured in...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015