Ansible Pilot

Red Hat Enterprise Linux 10 x86-64-v3 feature

Exploring x86-64-v3 in Red Hat Enterprise Linux 10

Discover the potential performance benefits of the x86-64-v3 microarchitecture in RHEL 10, focusing on enhanced vector operations, FMA instructions, and compatibility impacts.
January 21, 2024
Access the Complete Video Course and Learn Quick Ansible by 200+ Practical Lessons

Introduction to x86–64-v3 in RHEL 10

In Red Hat Enterprise Linux (RHEL) 9, Red Hat upgraded the instruction set architecture (ISA) baseline to the x86–64-v2 microarchitecture level. For RHEL 10, Red Hat is exploring an advancement to the x86–64-v3 level, potentially bringing significant performance benefits to various applications, particularly in data science and numerical computing domains.

New CPU Capabilities in x86–64-v3

x86–64-v3 offers substantial improvements over its predecessor:

Compatibility Impact

The x86–64-v3 architecture first appeared in Intel’s Haswell CPUs (2013) and AMD’s Excavator microarchitecture (2015). However, adopting x86–64-v3 in RHEL 10 may exclude some systems without these capabilities, similar to the transition to x86–64-v2 in RHEL 9.

Verifying Performance Improvements

The CentOS ISA SIG has conducted experiments by rebuilding CentOS 9 with x86–64-v2 and x86–64-v3 baselines using GCC 12. These efforts aim to demonstrate performance enhancements for key packages and workloads, thereby validating the transition to x86–64-v3.

Considerations for x86–64-v4

Given its limited support across CPU generations and architectures, Red Hat does not find x86–64-v4 suitable for a general-purpose operating system. Our focus remains on achieving a balance between performance enhancement and broad compatibility.



While further analysis is ongoing, the transition to x86–64-v3 for RHEL 10 looks promising. Developers can start testing their software with the x86–64-v3 architecture to prepare for potential changes and improvements. Feedback from these tests is highly encouraged.

Subscribe to the YouTube channel, Medium, and Website, X (formerly Twitter) to not miss the next episode of the Ansible Pilot.


Learn the Ansible automation technology with some real-life examples in my

My book Ansible By Examples: 200+ Automation Examples For Linux and AWX System Administrator and DevOps

BUY the Complete PDF BOOK to easily Copy and Paste the 250+ Ansible code

Want to keep this project going? Please donate

Access the Complete Video Course and Learn Quick Ansible by 200+ Practical Lessons
Follow me

Subscribe not to miss any new releases