• Title/Summary/Keyword: 큐잉

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Development of the Model Using Queueing Theory for Lifting Planning in Tall Buildings (큐잉이론을 이용한 고층건물 가설리프트 계획모델 구축에 관한 연구)

  • Lee, Hak-Ju;Kim, Dae-Won;Cho, Hun-Hee;Kang, Kyung-In
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2008.11a
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    • pp.628-633
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    • 2008
  • Tall building construction has been increasing due to the need to maximize land usage. It causes the increase of vertical transportation for workers and materials, which significantly affects the productivity and lifting planning, therefore, has to be made carefully based on the characteristics of the field. However, the existing method to calculate the number of lift is too simple to consider complex and various characteristics in tall building construction. Accordingly, we developed the model for selecting the best system of vertical transportation by using Queueing theory. To find out the situation of the queue of resources such as material and workers, a simulation program will be applied.

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Simulation of Storage Capacity Analysis with Queuing Network Models (큐잉 네트워크 모델을 적용한 저장용량 분석 시뮬레이션)

  • Kim, Yong-Soo
    • Journal of the Korea Society of Computer and Information
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    • v.10 no.4 s.36
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    • pp.221-228
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    • 2005
  • Data storage was thought to be inside of or next to server cases but advances in networking technology make the storage system to be located far away from the main computer. In Internet era with explosive data increases, balanced development of storage and transmission systems is required. SAN(Storage Area Network) and NAS(Network Attached Storage) reflect these requirements. It is important to know the capacity and limit of the complex storage network system to got the optimal performance from it. The capacity data is used for performance tuning and making purchasing decision of storage. This paper suggests an analytic model of storage network system as queuing network and proves the model though simulation model.

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Design and Performance Analysis for Clustered MNOD(Multimedia News On Demand) Server (Clustered MNOD(Multimedia News On Demand) 서버와 설계와 성능 평가)

  • 강연경;박성호;김영주;정기동
    • Proceedings of the Korean Information Science Society Conference
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    • 1998.10a
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    • pp.3-5
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    • 1998
  • 단일 데이터적 특성을 가진 VOD(Video On Demand)와 같은 멀티미디어 응용의 경우 복합적이고 집합적인 클러스터링 서버구조(composite clustered server structure)를 가정하는 경우가 대부분 이었다. 그러나, 혼합 데이터적 특성이 강한 MNOD 와 같은 멀티미디어 응용은 단일화된 클러스터링 서버 구조 보다는 각 데이터의 특성을 잘 반영할 수 있는 독립적이고 분산된 형태의 클러스터링 구조가 필수적이다. 이에 본 논문은 MNOD 서비스를 위한 새로운 형태의 클러스터링 서버 구조를 설계하고, 구조의 당위성을 큐잉 분석 Alc 스케줄링의 효율성 측면에서 증명하려고 시도하였다. 큐잉 분석 결과, 독립적 형태의 구조가 지니는 확장성, 실패회복의 용이성 등의 제반 장점 뿐 아니라 응답시간의 측면에서도 기존의 집합적인 클러스터링 구조보다 좋은 성능을 보였다.

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Design of High-speed Pointer Switching Fabric (초고속 포인터 스위칭 패브릭의 설계)

  • Ryu, Kyoung-Sook;Choe, Byeong-Seog
    • Journal of Internet Computing and Services
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    • v.8 no.5
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    • pp.161-170
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    • 2007
  • The proposed switch which has separated data plane and switching plane can make parallel processing for packet data storing, memory address pointer switching and simultaneously can be capable of switching the variable length for IP packets. The proposed architecture does not require the complicated arbitration algorithms in VOQ, also is designed for QoS of generic output queue switch as well as input queue. At the result of simulations, the proposed architecture has less average packet delay than the one of the memory-sharing based architecture and guarantees keeping a certain average packet delay in increasing switch size.

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A Performance Evaluation Model for TMN EMS with ATM Switching Systems (ATM교환기 TMN EMS의 성능 분석 모델)

  • 강병도;김태완;이길행;우왕돈
    • Journal of Korea Society of Industrial Information Systems
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    • v.4 no.3
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    • pp.44-51
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    • 1999
  • This paper presents the queuing model for evaluating the performance of TMN EMS with ATM switching systems. TMS for managing ATM switching systems has a hierarchical structure that consists of managers at the top level, agents at the middle, and ATM switching systems at bottom. A manager communicates with several agents, and an agent manages an ATM switching system We define a queuing model in order to predict the capacity and performance for managers in EMS. By evaluating the queuing model, we can predict the average service time and capacity of EMS.

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