System for monitoring computer infrastructure performance, when an application is used in production on a computer infrastructure comprising, in particular, resources defining a target computer architecture forming a schematic representation of the interactions between the different architecture components of a given so-called linking-chain subperimeter, in order to anticipate the infrastructure adjustments necessary to accelerate the response to incidents resulting in damage, or even an interruption of the services delivered by the application, the system being characterised in that it comprises: - probes associated with each resource for gathering and feeding back the measurement (metric) information representing use of the resources; - means for storing the feedback information of the probes, associated with means for processing this information constituting a module for archiving this information; - second means for processing this information to define a module for archiving the responses provided to problems by the monitoring system and second means for storing the responses to the problems detected; - at least one rule engine making it possible, on the basis of comparison of the information gathered and stored in the memory recording the feedback information of the probes, the indicators (SLOI) of the service level objectives, the stored scalability rules (SCAL), the definition of acceptability thresholds (SAi) stored in a memory dedicated to recording thresholds, the good practice stored in a memory dedicated to recording the definitions of good practice, and the activity periods stored in a memory allowing the recording and definition of periods of analysis, to establish correlations between these items of information in order to anticipate the trend of consumption of resources on at least one given date, in order to take them into account and define proposals for redimensioning the linking chain in connection with the workload which it supports or which it will support. - probes associated with each resource for gathering and feeding back the measurement (metric) information representing use of the resources; - means for storing the feedback information of the probes, associated with means for processing this information constituting a module for archiving this information; - second means for processing this information to define a module for archiving the responses provided to problems by the monitoring system and second means for storing the responses to the problems detected; - at least one rule engine making it possible, on the basis of comparison of the information gathered and stored in the memory recording the feedback information of the probes, the indicators (SLOI) of the service level objectives, the stored scalability rules (SCAL), the definition of acceptability thresholds (SAi) stored in a memory dedicated to recording thresholds, the good practice stored in a memory dedicated to recording the definitions of good practice, and the activity periods stored in a memory allowing the recording and definition of periods of analysis, to establish correlations between these items of information in order to anticipate the trend of consumption of resources on at least one given date, in order to take them into account and define proposals for redimensioning the linking chain in connection with the workload which it supports or which it will support.