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Tuning Linux Server I/O Schedulers for NVMe Workloads
In this episode of Linux Server Admin, Lucas and Luna dive into the often-overlooked world of I/O schedulers on modern NVMe drives. With the rise of NVMe storage, traditional schedulers like CFQ and even deadline are becoming less relevant, and the choice between none, mq-deadline, and bfq can have a real impact on latency and throughput. Lucas shares a production story from a busy PostgreSQL server where switching from the default none scheduler to mq-deadline reduced write latency by 15 percent under heavy load. Luna asks the practical questions: how do you check your current scheduler, and…
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