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How to get knowledgeable in linux performance engineering without actually requiring it in production Hi everyone, I'm a Platform Engineer building and maintaining a cluster-as-a-service platform. Outside of autoscaling configs and right-sizing resource requests and limits, "low-level" performance work isn't really a requirement for us right now, but I would like to become knowledgeable in that topic. I've started reading Brendan Gregg's Systems Performance and I'm really enjoying it. I also have some flexibility at work, so if I wanted to spend time on node-level performance tracing and profiling, I could, but I'm not sure how transferable that experience is to environments where performance engineering is genuinely critical. So my question is twofold: are there ways to build meaningful Linux performance engineering knowledge without access to high-scale production systems (we build clusters for internal workloads, that have like 30-50 nodes each)? And are there resources, labs, or projects you'd recommend for someone trying to bridge that gap? [link] [handle]

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