Evaluation of two load-balancing primary-backup process allocation schemes

Heejo Lee, Jong Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


SUMMARY In this paper, we show two process allocation schemes to tolerate multiple faults when the primary-backup replication method is used. The first scheme, called multiple backup scheine, is running multiple backup processes for each process to tolerate multiple faults. The second scheme, called regenerative backup scheme, is running only one backup process for each process, but re-generates backup processes for processes that do not have a backup process after a fault occurrence to keep the primary-backup process pair available. In both schemes, we propose heuristic process allocation methods for balancing loads in spite of the occurrence of faults. Then we evaluate and compare the performance of the proposed heuristic process allocation methods using simulation. Next, we analyze the reliability of two schemes based on their fault-tolerance capability. For the analysis of fault-tolerance capability, we find the degree of fault tolerance for each scheme. Then we find the reliability of each scheme using Markov chains. The comparison results of two schemes indicate that the regenerative single backup process allocation scheme is more suitable than the multiple backup allocation scheme.

Original languageEnglish
Pages (from-to)1535-1544
Number of pages10
JournalIEICE Transactions on Information and Systems
Issue number12
Publication statusPublished - 1999
Externally publishedYes


  • Faulttolerant multi-computer
  • Load balancing process allocation
  • Multiple faults
  • Primary-backup replication
  • Reliability analysis

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence


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