Cross-Layer Management and Control Sample Clauses

Cross-Layer Management and Control. Cross-Layer Management and Control (CLMC) is responsible monitoring, measurement and assessment of the performance of Media Services delivered by the Platform. The goal is to create knowledge about interactive media systems that allows multi-stakeholder decision makers within service management processes to understand how services respond to changes in workload and resourcing. The knowledge gained will be used to design and adapt management and control policies associated with Service Request Management, Fault Management and Configuration Management processes2. There are many possible management and control decisions and it is the purpose of the CLMC to provide decision makers with empirical knowledge to design and implement better policies. CLMC uses Key Performance Indicators (KPIs) to measure performance. KPIs are defined for different aspects of the system and associated with service management processes responsible for ensuring that the desired performance is met. KPIs define what success looks like for an interactive media communication process. Table 13 provides examples of media service KPIs based on the use cases defined in Section 4. An SF could be specified with a requirement for an average response time of <100mS for 95% of requests. It is the responsibility of Service Request Management processes to fulfil this KPI through implementation of management and control policies. Under typical conditions, platform control policies could be established to route requests on the shortest path to an SF or horizontally-scale a compute resource allocated to SFs if demand reaches a specific threshold. If the KPI is at risk of being breached (e.g. RT is <100ms for 96% requests) the platform management policies may redistribute SFs to hosts in ways that are more optimally aligned with the workload. Management policies may be used to breach the KPI if the liability is deemed acceptable or may even inform the Media Service that resources are constrained which results in a Media Service deciding to adapt content in ways that maintains response time KPI whilst reducing content quality. This last case is an example of cross-layer management where the Platform Provider shares resource state information with a Media Service Provider. Service Response Time Percentage of service requests fulfilled within an acceptable time. E.g. response time <100mS for 95% of requests Service Request Management Availability Percentage of actual uptime of services relative to the tota...