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UID:pretalx-devconf-cz-2026-GH8FMW@pretalx.devconf.info
DTSTART;TZID=CET:20260619T123000
DTEND;TZID=CET:20260619T130500
DESCRIPTION:Modern large-scale performance testing often runs up against a 
 fundamental limitation: traditional virtual machines simply don’t scale 
 economically or practically when simulating thousands of systems. Provisio
 ning and managing 4\,000–5\,000 VMs quickly becomes cost-prohibitive and
  operationally unmanageable\, making it difficult to accurately emulate re
 al-world distributed workloads.\n\nIn this talk\, I present a container-ba
 sed approach for high-density system simulation that replaces VM-centric t
 est environments with lightweight containers orchestrated on a small numbe
 r of powerful hosts. Using Podman to run large numbers of containers on a 
 single machine\, we demonstrate how to spin up thousands of isolated test 
 environments rapidly with significantly lower overhead than VMs.\n\nI will
  walk through the challenges faced in this approach - like resource exhaus
 tion \, kernel limits and how to overcome those.We would wrap up by discus
 sing how to run tests and collect metrics under high load.
DTSTAMP:20260430T125720Z
LOCATION:D0206 (capacity 154)
SUMMARY:Stop Spawning VMs:Architecting High-Density Performance Testing wit
 h Container-Based Simulation - Shubham Bansal
URL:https://pretalx.devconf.info/devconf-cz-2026/talk/GH8FMW/
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