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Ubuntu Azure Kernel Network Performance

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Ubuntu Azure Kernel Network Performance
J
Jenna's Runbooks
Hi there! I'm a Cloud Engineer & SRE, documenting my transition into AI/ML Platform Engineering. I write technical deep-dives, hands-on implementation guides, CLI helper scripts, and visual architectures covering cloud, infrastructure, orchestration, governance, and modern AI runtimes.
Part of seriesPlatform & AI Infra

Not all Azure Linux VM's are created equal, particularly when it comes to network performance 💨
 
The Ubuntu Azure kernel is the most optimized for network performance on Azure. The majority of Linux 🖥 in Azure runs on Ubuntu making it the OS of choice for developers and admins.
 
Here are a few benefits of using Ubuntu 22.04 LTS Azure images over other available Linux flavors:
- Currently runs on 5.15.x kernel version which is higher than some other available images
- Pre-configured with DNS caching using systemd-resolved
- Multi-path TCP (MPTCP) settings enabled allowing for multiplexing of connections into a single data-stream for increased resiliency and throughput
- Azure Accelerated Networking provides consistent ultra-low network latency
 
Check if you're Ubuntu VM is running on the optimized Azure Linux kernel to get the above benefits and more by running "uname -r", example output below which ends in "-azure":
𝟱.𝟭𝟱.𝟬-𝟭𝟬𝟮𝟵-𝗮𝘇𝘂𝗿𝗲

#azure#ubuntu#networking#cloud#cloud-computing
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Documenting cloud operations, developer tooling, and AI infrastructure. Content is organized into four main sections: Platform & AI Infrastructure (runtimes, K8s, kernel tuning), MLOps & Reliability (Terraform IaC, FinOps, security, automation), Cloud Architectures (multi-cloud blueprints & system design), and DevEx (CLI utilities, agentic workflows).