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Read server graphs

Updated October 7, 2026 · 1 min read

Follow a server's CPU, memory, disk and network use over the last hour, day or week, so you can spot a full disk or a busy server before it causes trouble.

On this page
  1. Step 1: Open the Graphs tab
  2. Step 2: Pick a time range
  3. Step 3: Read the charts
  4. If the charts stay empty

Before you start

Step 1 Open the Graphs tab

Open Servers, click the server and select the Graphs tab.

The server's Overview tab shows the same values live. This tab shows how they changed over time.

Step 2 Pick a time range

Choose Live, 1 hour, 12 hours, 24 hours or 1 week at the top right. All charts switch to that range.

Step 3 Read the charts

ChartWhat it shows
CPU usageHow busy the processor is, in percent.
RAM usageHow much memory is in use, in percent.
Disk usageHow full the disk is, in percent.
Disk throughputHow much data is read from and written to the disk.
Disk IOPSHow many read and write operations the disk handles.
Network trafficData coming in and going out.
Network packets per secondPackets coming in and going out.

CPU or RAM that stays near 100% means the server is too small for its sites. You can resize the server. A disk that keeps filling up also shows as an alert on the Monitoring page once it passes 85%.

If the charts stay empty

The server reports its values through a small monitoring agent. If you see Collecting historical metrics, the first samples haven't arrived yet. Wait a few minutes, or click Refresh agent to reinstall the agent and reload the charts.

History is kept for one week. Values older than a day are shown as 15-minute averages.