Hi Abdelkader, Thanks for you work!
> This stack allows NVMe drives to run at full speed and use all available > lanes, instead of being quirked to use only one. >From a cursory look at the stack, it seems the changes are either specific to >Apple hardware or fixes for complete stalls with a priori no impact on the I/O >speed, except possibly for the arbitration burst programming >(https://reviews.freebsd.org/D59155). > Older NVMe drives will probably see no performance improvement. People with > modern NVMe drives can see improvements between 2x and 13x. (from tests) Are NVME drives from all brand potentially concerned? Which change (or changes) in the stack cause(s) the improvement you're observing on non-Apple hardware? Thanks and regards. -- Olivier Certner
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