A web service slowed down under load, despite database CPU being low. Diagnosis: Using the Forced Flow Law, each HTTP request visited the DB twice. But the connection pool max was 10. At 100 concurrent users, 90 were waiting for a connection (queueing). Formula from 6.1060: Queue Length = (Arrival Rate * Service Time) / (1 - Utilization) > Pool size. Solution: Increased connection pool to 100 and added connection pipeline batching. Result: Throughput scaled linearly up to 500 req/sec.
These are: (1) manage using a phased life-cycle plan; (2) perform continuous validation; (3) maintain disciplined product control; Τμήμα Επιστήμης Υπολογιστών Software Performance Engineering 6.1060 software performance engineering
Tools like perf in Linux or language-specific profilers (JProfiler for Java, pprof for Go) help identify "hot spots"—sections of code that consume the most CPU cycles. A web service slowed down under load, despite
Designing algorithms that respect cache and memory hierarchies to minimize latency. At 100 concurrent users, 90 were waiting for
That’s where comes in. While the course number originates from MIT’s legendary electrical engineering and computer science curriculum, the principles have become a universal blueprint for building systems that don’t just function—they fly .