Statistics and Graphs
How to read and interpret resource usage graphs in VirtFusion panel
The VirtFusion panel includes historical resource graphs, useful to understand server load trends and identify anomalies.
Access Statistics
- Access VirtFusion panel
- Select your server
- Go to Graphs or Statistics
Available Graphs
CPU
Shows CPU usage percentage over time. Constantly high usage (>80%) indicates server under excessive load.
What to look for:
- Sudden spikes → anomalous processes or attacks
- Constantly at 100% → need upgrade or optimization
- Normal usage with regular peaks → scheduled cron job or backup
RAM
Shows memory used vs total available.
Note: High RAM usage isn't necessarily problem: Linux uses free RAM as cache. Problem appears when server starts using swap. Guide: High CPU or RAM
Network
Shows inbound (download) and outbound (upload) traffic over time.
What to look for:
- Anomalous outbound traffic → possible compromised server or misconfiguration
- Very high inbound traffic → potential DDoS attack
Disk (I/O)
Shows read and write operations on disk over time.
What to look for:
- I/O constantly at max → database or apps writing too much, disk nearly saturated
- Regular nightly spikes → normal if you have scheduled backups
Time Intervals
Usually can select different time ranges:
- 1 hour: detailed recent view
- 24 hours: daily trend
- 7 days: weekly trend
- 30 days: monthly view
Graphs Don't Show Data
If graphs are empty or not updating:
- Server must be on and running to collect data
- Data updates at regular intervals (usually 1-5 minutes)
- Newly reinstalled server will have empty graphs until enough data collected
Real-Time Monitoring
Panel graphs show historical data. For real-time resource monitoring inside server, use:
htop # CPU and RAM in real-time
iotop # Disk I/O per process
nethogs # Network traffic per processComplete guide: Monitor Resources