Software⏱️ 3 min read📅 2026-06-19

How to Fix: Error: /dev/hugepages does not exist

Error fixing hugepages mount point not existing in Ubuntu DPDK setup.

Quick Answer: Run the command "sudo mkdir /dev/hugepages" to create the mount point before mounting the hugetlbfs file system.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🚀 How to Resolve This Issue
  3. 💡 Conclusion

The error '/dev/hugepages does not exist' occurs when attempting to mount huge pages using the hugetlbfs file system on Ubuntu. This issue affects users who rely on huge pages for high-performance computing, data center applications, or any environment requiring efficient memory allocation.

This problem can be frustrating as it prevents the successful execution of commands that require huge pages, such as those used in DPDK development kits. However, by following the steps outlined below, you should be able to resolve this issue and continue working with your system.

⚠️ Common Causes

  • The primary reason for this error is that huge pages are not enabled on your system. Huge pages are a feature of Linux kernel that allows for efficient allocation of large blocks of memory, but they must be explicitly enabled before they can be used.
  • Alternatively, the hugetlbfs file system might not have been properly installed or configured, leading to this error.

🚀 How to Resolve This Issue

Enabling Huge Pages

  1. Step 1: Step 1: Check if huge pages are enabled on your system. Run the following command to check the status of huge pages: `cat /proc/sys/vm/hugepages`. If huge pages are not enabled, proceed to the next step.
  2. Step 2: Step 2: Enable huge pages by adding the following line to the `/etc/sysctl.conf` file: `vm.hugepages_enabled=1`. Then, run the command `sudo sysctl -p /etc/sysctl.conf` to apply the changes. This will enable huge pages on your system.

Mounting Huge Pages Manually

  1. Step 1: Step 1: Create a mount point for the hugetlbfs file system by running the following command: `sudo mkdir /dev/hugepages`. This will create a new directory where huge pages can be mounted.
  2. Step 2: Step 2: Mount the hugetlbfs file system to the newly created mount point using the following command: `sudo mount -t hugetlbfs none /dev/hugepages`. This will enable the use of huge pages on your system.

💡 Conclusion

By enabling huge pages or mounting them manually, you should be able to resolve the '/dev/hugepages does not exist' error and continue working with your DPDK development kit. Remember to restart your system after making any changes to ensure that they take effect.

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