Software Maintenance Lect.6 System monitoring,

Transcript:Software Maintenance Lect.6 System monitoring,:
Software Maintenance Lect.6 System monitoring, software maintenance metric and wrap up System monitoring involves the continuous observation and analysis of a software system and its underlying infrastructure to track its health, performance, resource utilization, and overall behavior in real-time. Could be done via: Real-time Data Collection: Gathering metrics like CPU usage, memory consumption, network traffic, disk I/O, application response times, error rates, etc. Threshold Setting: Defining acceptable performance ranges and setting alerts for when these thresholds are breached. Alerting and Notifications: Automatically informing relevant teams when issues or anomalies are detected. Logging: Recording system events, errors, and performance data for historical analysis and troubleshooting. Visualization and Dashboards: Presenting monitoring data in an easily understandable format to provide insights into the system's state. Importance of system monitoring Proactively identifies potential problems before they impact users. Provides insights into system performance and resource utilization. Facilitates faster troubleshooting and root cause analysis when issues occur. Helps in capacity planning ( scalability) and resource optimization. Ensures system availability and stability. Performance Management Performance management focuses on ensuring that a software system meets its performance requirements (e.g., response times, throughput, latency) and operates efficiently. Performance management could be achieved by: Performance Testing: Simulating various load conditions to evaluate the system's responsiveness, scalability, and stability under stress. Bottleneck Identification: Identifying components or parts of the system that are causing performance degradation. Performance Tuning: Modifying system configurations, code, or infrastructure to improve performance. Capacity Planning: Forecasting future resource needs based on performance trends. Establishing Performance Baselines and KPIs: Defining metrics and targets to measure and track performance improvements. The aim of performance management is : Ensures a positive user experience by maintaining acceptable response times. Maximizes system efficiency and resource utilization. Enables the system to handle increasing user loads and data volumes (scalability). Reduces operational costs by optimizing resource usage. Helps in identifying architectural or design flaws that impact performance What is the Interrelation among Software Maintenance, System Monitoring, and Performance Management These three areas are interconnected and support each other throughout the software lifecycle: Monitoring informs Maintenance: System monitoring provides data that triggers maintenance activities. For example, alerts about high error rates or slow response . Maintenance impacts Performance: Software maintenance activities, especially perfective maintenance (performance enhancements) and preventive maintenance (code optimization), directly aim to improve the system's performance and prevent future performance issues. Performance Management guides Maintenance: Performance testing and analysis identify areas where the