Abstract
In multimedia computing, guaranteeing Quality of Service(QOS) is one of the most important topics. If QOS values specified by users are not ensured, the users may not put up with the degraded quality of media streams. However, operating systems cannot understand QOS values specified by users directly, then the QOS values should be mapped to the CPU capacity that is required for guaranteeing the QOS values. There are two approaches for realizing the mapping. In the first approach called static mapping, the mapping is calculated before applications are started. In the second approach called dynamic mapping, the mapping is calculated at run-time. The system monitors the actual CPU utilization of continuous media applications, and adjusts their reserved CPU resources at run-time. The advantage of the approach is that it does not require to estimate the CPU utilization that each application requires. In this paper, we propose an adaptive QOS mapping scheme using a feedback control. Also, we show that high level QOS values can be adjusted according to the reserved CPU capacity by using our algorithm.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International Workshop on Real-Time Computing Systems and Applications/RTCSA |
| Editors | Anon |
| Place of Publication | Piscataway, NJ, United States |
| Publisher | IEEE |
| Pages | 261-268 |
| Number of pages | 8 |
| Publication status | Published - 1996 |
| Externally published | Yes |
| Event | Proceedings of the 1996 3rd International Workshop on Real-Time Computing Systems and Applications - Seoul, South Korea Duration: 1996 Oct 30 → 1996 Nov 1 |
Other
| Other | Proceedings of the 1996 3rd International Workshop on Real-Time Computing Systems and Applications |
|---|---|
| City | Seoul, South Korea |
| Period | 96/10/30 → 96/11/1 |
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ASJC Scopus subject areas
- Computer Science(all)
Cite this
Experiences with adaptive QOS mapping scheme. / Nakajima, Tatsuo; Fujita, Hiroshi.
Proceedings of the International Workshop on Real-Time Computing Systems and Applications/RTCSA. ed. / Anon. Piscataway, NJ, United States : IEEE, 1996. p. 261-268.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Experiences with adaptive QOS mapping scheme
AU - Nakajima, Tatsuo
AU - Fujita, Hiroshi
PY - 1996
Y1 - 1996
N2 - In multimedia computing, guaranteeing Quality of Service(QOS) is one of the most important topics. If QOS values specified by users are not ensured, the users may not put up with the degraded quality of media streams. However, operating systems cannot understand QOS values specified by users directly, then the QOS values should be mapped to the CPU capacity that is required for guaranteeing the QOS values. There are two approaches for realizing the mapping. In the first approach called static mapping, the mapping is calculated before applications are started. In the second approach called dynamic mapping, the mapping is calculated at run-time. The system monitors the actual CPU utilization of continuous media applications, and adjusts their reserved CPU resources at run-time. The advantage of the approach is that it does not require to estimate the CPU utilization that each application requires. In this paper, we propose an adaptive QOS mapping scheme using a feedback control. Also, we show that high level QOS values can be adjusted according to the reserved CPU capacity by using our algorithm.
AB - In multimedia computing, guaranteeing Quality of Service(QOS) is one of the most important topics. If QOS values specified by users are not ensured, the users may not put up with the degraded quality of media streams. However, operating systems cannot understand QOS values specified by users directly, then the QOS values should be mapped to the CPU capacity that is required for guaranteeing the QOS values. There are two approaches for realizing the mapping. In the first approach called static mapping, the mapping is calculated before applications are started. In the second approach called dynamic mapping, the mapping is calculated at run-time. The system monitors the actual CPU utilization of continuous media applications, and adjusts their reserved CPU resources at run-time. The advantage of the approach is that it does not require to estimate the CPU utilization that each application requires. In this paper, we propose an adaptive QOS mapping scheme using a feedback control. Also, we show that high level QOS values can be adjusted according to the reserved CPU capacity by using our algorithm.
UR - http://www.scopus.com/inward/record.url?scp=0030417552&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030417552&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0030417552
SP - 261
EP - 268
BT - Proceedings of the International Workshop on Real-Time Computing Systems and Applications/RTCSA
A2 - Anon, null
PB - IEEE
CY - Piscataway, NJ, United States
ER -