Hardware⏱️ 3 min read📅 2026-05-29

How to Fix: Linux Virtual Machines on Proxmox VE hang/freeze and crash frequently

Quick Answer: The Intel Pentium Silver N6005 CPU might be underpowered for heavy virtualization workloads, consider upgrading to a more powerful processor or adding more RAM (at least 32GiB) to improve performance and stability.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🛠️ Step-by-Step Verified Fixes
  3. 💡 Conclusion

The frequent hanging, freezing and crashing of Linux Virtual Machines on Proxmox VE can be attributed to several common causes. Insufficient RAM, inadequate CPU resources, and poor disk performance are some of the primary reasons for this issue.

⚠️ Common Causes

  • Insufficient RAM: The 16GiB of RAM may not be enough to handle the memory-intensive workloads of your virtual machines.
  • Inadequate CPU resources: The Intel Pentium Silver N6005 CPU might not provide sufficient processing power for resource-intensive applications.
  • Poor disk performance: The use of a small form factor PC with limited storage capacity can lead to slow disk access times, causing virtual machines to freeze or crash.

🛠️ Step-by-Step Verified Fixes

Method 1: Optimizing Resource Allocation

  1. Step 1: Increase the RAM allocation for each virtual machine to at least 8GiB.
  2. Step 2: Ensure that the CPU resources are sufficient by allocating at least one CPU core per virtual machine.
  3. Step 3: Configure the disk performance by adding more storage capacity or using a faster storage drive, such as an NVMe SSD.

Method 2: Upgrading the Hardware

  1. Step 1: Consider upgrading the CPU to a more powerful processor, such as an Intel Core i5 or i7.
  2. Step 2: Add more RAM by replacing the existing RAM modules with higher-capacity ones.

Method 3: Using a More Powerful Host Machine

  1. Step 1: Consider upgrading the host machine to a more powerful one, such as an Intel Core i7 or AMD Ryzen 9.
  2. Step 2: Increase the RAM allocation for Proxmox VE by adding more RAM modules or using higher-capacity ones.

💡 Conclusion

By following these steps and optimizing the resource allocation, upgrading the hardware, or using a more powerful host machine, you can significantly improve the performance of your Linux Virtual Machines on Proxmox VE.

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