System monitoring method and system monitoring device

Abstract

A model-match-rate evaluating unit of a transaction monitoring device, which monitors a transaction system, evaluates a ratio of the number of transactions that match any models and respective processing times of all layers in the transaction are each within a corresponding normal range to the number of transactions observed per unit time as a model match rate. When the model-match-rate evaluating unit detects an abnormality of the system based on the model match rate, a suspicious-point-in-suspicious-model extracting unit of a transaction detail analyzing device extracts a point where a processing time deviates from the normal range as a suspicious point, a problematical-point evaluating unit evaluates a problem of each suspicious point as a problematical point, and a detail-analysis-result display unit displays an evaluation result of the problematical point and the suspicious point.