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System Monitoring ​

System monitoring

System Monitoring records and displays CPU, memory, disk I/O, and network traffic over time. Open Monitoring > System. Use Alerts to define thresholds and Settings & Notifications to configure collection, retention, SMTP, and event delivery.

Monitor Page ​

Data Collection Settings ​

Collection controls are under Monitoring > Settings.

Enable Monitoring ​

After turning on the Enable Monitoring switch, the system will periodically collect performance data.

Save Days ​

Set the retention time for monitoring data, default is 30 days (range 1-365). Data exceeding the retention time will be automatically cleaned up.

Collection Interval ​

Set how often performance data is collected, default is 1 minute (range 1-120 minutes). A larger interval reduces the amount of data stored at the cost of lower granularity.

Clear Monitoring Records ​

Click the Clear Monitoring Records button to manually clear all historical monitoring data.

Monitoring Metrics ​

Load Average ​

System load reflects the busyness of the CPU:

  • 1-minute load: Average load over the last 1 minute
  • 5-minute load: Average load over the last 5 minutes
  • 15-minute load: Average load over the last 15 minutes

Load value reference:

  • Load < CPU cores: System running smoothly
  • Load = CPU cores: System running at full capacity
  • Load > CPU cores: System overloaded, may experience lag

CPU Usage ​

Displays the overall CPU usage percentage (0-100%) over time. Hover over the chart to see the Top 5 processes by CPU usage at that point in time.

Memory Usage ​

Displays memory usage in MB:

  • Used memory
  • Swap usage

Hover over the chart to see the Top 5 processes by memory usage at that point in time.

Disk I/O ​

Displays disk read/write speed:

  • Read speed (KB/s or MB/s)
  • Write speed (KB/s or MB/s)

Use the checkboxes to choose which disk devices to display (all are selected by default). Hover over the chart to see the Top 5 processes by disk I/O, including their total read and total write.

Network Traffic ​

Displays network interface traffic:

  • Upload speed
  • Download speed

Use the checkboxes to choose which network interfaces to display (all are selected by default). The loopback interface (lo) is excluded.

Time Range ​

Each monitoring chart supports selecting a time range:

  • Yesterday: View yesterday's data
  • Today: View today's data
  • Last 7 days: View data from the last week
  • Custom: Select any time range

Use Cases ​

Performance Analysis ​

Analyze server performance bottlenecks through monitoring data:

  • Sustained high CPU load: Consider optimizing programs or upgrading CPU
  • Insufficient memory: Consider adding memory or optimizing memory usage
  • High disk I/O: Consider using SSD or optimizing database queries
  • Insufficient network bandwidth: Consider upgrading bandwidth

Troubleshooting ​

When problems occur, view historical monitoring data to locate the time and cause of the problem.

Capacity Planning ​

Based on historical data trends, predict future resource needs and plan for expansion in advance.

Notes ​

  • Monitoring data will occupy some disk space
  • The longer the retention days, the more space it occupies
  • It is recommended to set appropriate retention days based on actual needs