The Linux Block Layer, Built for Fast Storage

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The arrival of flash storage introduced a radical change in performance profiles of direct attached devices. At the time, it was obvious that Linux I/O stack needed to be redesigned in order to support devices capable of millions of IOPs, and with extremely low latency.

In this talk we will revisit the changes the Linux block layer in the last decade or so, that made it what it is today, performant, scalable, robust, NUMA-aware subsystem. In addition, we will cover the new NVMe over…


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