Matthew Dillon has written a new, from scratch, driver for NMVe in DragonFly. If you haven’t encountered it yet, that’s SSD access over PCIe, which gives better throughput than ATA. He’s posted a summary of his work, and it’s possible to load it now as a module. It supports MSI-X, and there’s test results from using dd on supported NVMe hardware.
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This is truly exciting from the Dragonfly team! Can’t wait to get swapcache fired up on one of these drives!