Where does high server load diagnosis begin?

Diagnosing high server load begins with systematic collection and analysis of metrics and logs. Main steps:

1. Check CPU and memory usage — using top, htop, vmstat, or system monitoring tools (Prometheus, Grafana).

2. Analyze disk and I/O usage — iostat, iotop can help identify bottlenecks in the disk subsystem.

3. Check network activity — netstat, iftop, or similar tools to assess network connections and traffic.

4. Examine application and system logs — to identify errors, warnings, or anomalies.

5. Profile processes — if possible, use profilers (e.g., perf, strace) for in-depth analysis.

6. Check configurations and limits — such as open file limits, connection pool settings.

7. Identify peak loads and their causes — analyze when and why the load increases.

This approach helps localize the cause of high load and take measures for optimization.