Abstract: A method of determining quality of service (QoS) in an IT infrastructure on the basis of QoS-related data received from data sources for these QoS-related data, wherein the data from the data sources regularly arrive in real-time, but data from one or more of the data sources may occasionally be delayed. On the basis of the regular data, a real-time indication of the quality of service is calculated in a first process. This indication is possibly inaccurate since delayed data is not included. After the receipt of delayed data, a delayed, but more accurate indication of the quality of service is calculated in a second concurrent process on the basis of regular information, which comprises at least one of regular data and information derived from it, and the delayed data.

Abstract: An exemplary embodiment of the present invention provides a method for visualizing the performance of a system. The method includes generating a topological map of an application environment from a configuration management database (CMDB), wherein the topological map comprises a plurality of configuration items (CIs). A selection of configuration items (CIs) is made from the plurality of CIs. The definition of one or more performance graph(s) for the CIs is obtained from an operational database, wherein the performance graphs are configured to simultaneously show performance metrics for the CI and related CIs. Performance data for the CI and the related CIs are accessed and the performance graph is generated from the data.

Abstract: A method of determining quality of service (QoS) in an IT infrastructure on the basis of QoS-related data received from data sources for these QoS-related data, wherein the data from the data sources regularly arrive in real-time, but data from one or more of the data sources may occasionally be delayed. On the basis of the regular data, a real-time indication of the quality of service is calculated in a first process. This indication is possibly inaccurate since delayed data is not included. After the receipt of delayed data, a delayed, but more accurate indication of the quality of service is calculated in a second concurrent process on the basis of regular information, which comprises at least one of regular data and information derived from it, and the delayed data.