Troubleshooting High CPU or Memory Usage

If your server is experiencing high CPU or memory usage, it may become slow or unresponsive. This guide will help you diagnose and optimize server performance.

Note: If you prefer expert assistance, our Managed Services include server optimization. This is not included in basic support, but you can upgrade by contacting sales@support.nubius.io.

Step 1: Identify the Cause

Checking CPU and Memory Usage

To see what is using the most resources, use one of these methods:

1. Using the Web Console (For Windows Servers)

1. Log in via Remote Desktop (RDP).

2. Open Task Manager (Ctrl + Shift + Esc).

3. Click the Processes tab and sort by CPU or Memory to see what is using the most resources.

2. Using SSH (For Linux Servers)

1. Connect via SSH (use PuTTY on Windows or Terminal on Mac/Linux).

2. Run the following command:

   top

   • Press Shift + M to sort by memory usage.

   • Press Shift + P to sort by CPU usage.

3. Look for processes that are using excessive resources.

Step 2: Address Common Issues

1. Restart Problematic Services

If a specific service is using too many resources, restart it:

• Linux:

  sudo systemctl restart service-name

• Windows:

  1. Open Task Manager → Click Services.

  2. Find the service and right-click Restart.

2. Stop Unnecessary Processes

If certain processes are consuming too many resources:

• Linux: Use the following command:

  sudo kill process-ID

  (Replace process-ID with the actual number from the top command.)

• Windows: Open Task Manager, right-click the process, and select End Task.

3. Check for High Traffic (Web Servers)

If you are running a web server (Apache, Nginx, etc.), high CPU usage could be due to excessive traffic.

• Linux: Check active connections:

  netstat -an | grep :80 | wc -l

• If you see a large number, consider using a CDN (like Cloudflare) to reduce load.

4. Optimize Applications

• Database Issues: If you run MySQL or PostgreSQL, optimize queries and indexes.

• Heavy Scripts: Check cron jobs and scheduled tasks that may be running too frequently.

5. Increase Server Resources (If Needed)

If your server is constantly maxing out CPU or memory, consider upgrading:

1. Log in to the Nubius Customer Portal.

2. Go to Services → My Services.

3. Select your server and click Upgrade/Downgrade.

4. Choose a plan with more CPU or RAM.

Step 3: Prevent Future Issues

Enable Monitoring

Use 360 Monitoring for real-time alerts on high CPU or memory usage.

1. Log in to the Nubius Customer Portal.

2. Navigate to Store → 360 Monitoring.

3. Select a plan and follow the setup instructions.

Optimize Your Server

Important: Before running any update make sure you backup your server. Updating Linux may break your configuration or applications.

• For Linux: Run updates regularly:

  sudo apt update && sudo apt upgrade -y  # Debian/Ubuntu
  sudo yum update -y  # CentOS/RHEL

• For Windows: Install updates via Windows Update.

Upgrade to Managed Services

If troubleshooting is too complex, our Managed Services handle performance tuning for you. Contact sales@support.nubius.io to upgrade.