LOAD DISTRIBUTION DEVICE AND LOAD DISTRIBUTION METHOD

• Main Author: KITANO YUDAI
• Format: Patent
• Language: English; Japanese
• Published: 07.02.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

To reduce an average processing TAT of a distributed system having a plurality of bases.SOLUTION: A load distribution device 100 which distributes signals to processing servers arranged in a plurality of bases generates three of more groups using each processing TAT of the processing servers, and determines a combination of a first group and a second group having an average TAT second longest next to the first group for the generated groups. The load distribution device 100 includes a server information acquisition unit 120 which acquires load information on a high speed server of the first group, a number of subrogation signals calculation unit 111 which calculates the number of signals to be assigned to high speed servers among the signals originally to be assigned to the low speed servers for each combination in a range not exceeding a prescribed load limit value on the basis of the number of low speed servers of the second group, the number of high speed servers, a maximum value of the acquired load information, and load variation rate of the high speed servers, and an assigning unit 110 which assigns the number of subrogation signals to the high speed servers from the low speed servers.SELECTED DRAWING: Figure 2 【課題】拠点が複数存在する分散システムの平均処理ＴＡＴを低減させる。【解決手段】複数の拠点に配置されている処理サーバに信号を振り分ける負荷分散装置１００は、処理サーバの各々の処理ＴＡＴを用いて３以上のグループを作成し、作成したグループについて、第１のグループと、平均ＴＡＴが第１のグループの次に長い第２のグループとの組合せを決定する。また、負荷分散装置１００は、第１のグループの高速サーバの負荷情報を取得するサーバ情報取得部１２０と、第２のグループの低速サーバの台数と、高速サーバの台数と、取得した負荷情報の最大値と、高速サーバの負荷変動率とに基づいて、所定の負荷制限値を超えない範囲で、低速サーバに振り分けるべき信号を高速サーバに振り分ける肩代わり信号数を、組合せごとに算出する肩代わり信号数算出部１１１と、肩代わり信号数分を、低速サーバから高速サーバに振り分ける振分部１１０と、を備える。【選択図】図２