Name: Server Partitioning Without VMs - for Flexibility and Performance - Antti Kervinen, Intel & Feruzjon Muyassarov, Ericsson Software Technology
Start: 2025-08-26T14:10:00+0200
End: 2025-08-26T14:50:00+0200

25-27, August 2025
Amsterdam, Netherlands
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Tuesday August 26, 2025 14:10 - 14:50 CEST

Emerald Room

Efficient use of servers with tens or hundreads of CPUs most often requires partitioning it so that only a fraction of CPUs is disclosed to a set of containers. This improves performance, hardware utilization, and mitigates the noisy neighbor problem.

In this session, you will learn about very flexible CPU and memory partitioning that enables squeezing maximum performance from the server. For instance, you will see how to arrange containers into dynamically growing and shrinking CPU sets. How to group containers into CPU sets based on their names, labels, QoS classes, or namespaces. How to pre-allocate isolated CPUs for latency critical containers. How to let containers burst outside their partitions if there are free CPUs. And without forgetting observability, how to view existing partitions in the cluster in detail, including exact CPUs and containers in each partition.

We use NRI plugins and the balloons policy for demonstrating this, without limitations of Kubernetes CPU manager, or overhead of VMs. That said, this partitioning makes sense inside large VMs, too.

Speakers

Antti Kervinen

Cloud Orchestration Software Engineer, Intel

Antti Kervinen is a Cloud Orchestration Software Engineer working at Intel, whose interest in Linux and distributed systems has led him from academic research of concurrency to the world of Kubernetes. When unplugged, Antti spends his time outdoors discovering wonders of nature... Read More →

Feruzjon Muyassarov

Software Engineer, Ericsson Software Technology

Feruzjon Muyassarov is a Software Engineer focused on Kubernetes optimization and resource management. At Ericsson Software Technology, he works on enhancing performance and hardware integration in cloud-native systems.https://www.linkedin.com/in/fmuyassarov/

Tuesday August 26, 2025 14:10 - 14:50 CEST
Emerald Room

Cloud & Containers

Audience Experience Level Beginner

Open Source Summit Europe 2025

Antti Kervinen

Feruzjon Muyassarov

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