Flexible Scheduling in Multimedia Kernels

P.G. Jansen; Johan Scholten; Emiel Wygerink

Flexible Scheduling in Multimedia Kernels

P.G. Jansen, Johan Scholten, Emiel Wygerink

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Current Hard Real Time (HRT) kernels have their timely behaviour guaranteed on the cost of a rather restrictive use of the available resources. This makes current HRT scheduling techniques inadequate for use in a multimedia environment where we can make a considerable profit by a better and more flexible use of the resources. We will show that we can improve the flexibility and efficiency of multimedia kernels by combining Real Time Transactions with Deadline Inheritance policies under the Earliest Deadline First or the Deadline Monotonic rule. A currently running multimedia experiment shows a scheduling overhead of less than 0.5 percent. We also present the main ingredients for an open and adaptive Quality of Service (QoS) management. In particular a technique for rapid QoS schedulability analyses is offered. This technique can be applied to Hard Real Time analyses as well.

Original language	English
Title of host publication	3rd International Electronic Engineering Congress, INTERCON 1996
Place of Publication	Trujillo, Peru
Publisher	Universidad Privada Antenor Orrego
Pages	93-102
Number of pages	10
Publication status	Published - 1996
Event	3rd International Electronic Engineering Congress, INTERCON 1996 - Trujillo, Peru Duration: 12 Aug 1996 → 17 Aug 1996 Conference number: 3

Other

Other	3rd International Electronic Engineering Congress, INTERCON 1996
Abbreviated title	INTERCON
Country	Peru
City	Trujillo
Period	12/08/96 → 17/08/96

Keywords

CAES-PS: Pervasive Systems
Real-time kernel
Transaction
Deadline inheritance
Multimedia
QoS
Schedulability

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Jansen1996flexible
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title = "Flexible Scheduling in Multimedia Kernels",

abstract = "Current Hard Real Time (HRT) kernels have their timely behaviour guaranteed on the cost of a rather restrictive use of the available resources. This makes current HRT scheduling techniques inadequate for use in a multimedia environment where we can make a considerable profit by a better and more flexible use of the resources. We will show that we can improve the flexibility and efficiency of multimedia kernels by combining Real Time Transactions with Deadline Inheritance policies under the Earliest Deadline First or the Deadline Monotonic rule. A currently running multimedia experiment shows a scheduling overhead of less than 0.5 percent. We also present the main ingredients for an open and adaptive Quality of Service (QoS) management. In particular a technique for rapid QoS schedulability analyses is offered. This technique can be applied to Hard Real Time analyses as well.",

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author = "P.G. Jansen and Johan Scholten and Emiel Wygerink",

year = "1996",

language = "English",

pages = "93--102",

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T1 - Flexible Scheduling in Multimedia Kernels

AU - Jansen, P.G.

AU - Scholten, Johan

AU - Wygerink, Emiel

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AB - Current Hard Real Time (HRT) kernels have their timely behaviour guaranteed on the cost of a rather restrictive use of the available resources. This makes current HRT scheduling techniques inadequate for use in a multimedia environment where we can make a considerable profit by a better and more flexible use of the resources. We will show that we can improve the flexibility and efficiency of multimedia kernels by combining Real Time Transactions with Deadline Inheritance policies under the Earliest Deadline First or the Deadline Monotonic rule. A currently running multimedia experiment shows a scheduling overhead of less than 0.5 percent. We also present the main ingredients for an open and adaptive Quality of Service (QoS) management. In particular a technique for rapid QoS schedulability analyses is offered. This technique can be applied to Hard Real Time analyses as well.

KW - CAES-PS: Pervasive Systems

KW - Real-time kernel

KW - Transaction

KW - Deadline inheritance

KW - Multimedia

KW - QoS

KW - Schedulability

M3 - Conference contribution

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EP - 102

BT - 3rd International Electronic Engineering Congress, INTERCON 1996

PB - Universidad Privada Antenor Orrego

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