Call for testers with NVMe

Hi all,

I am about to land the D59156 stack in about 24 hours: https://reviews.freebsd.org/D59156

It is a stack of 6 commits, D59151 --> D59156.

This stack allows NVMe drives to run at full speed and use all available lanes, instead of being quirked to use only one.

Older NVMe drives will probably see no performance improvement. People with modern NVMe drives can see improvements between 2x and 13x. (from tests)

On Apple machines, I measured up to 7.2x. Entreprise drive went from 800MB/s to 12GB/s in a PCIe-5 slot.

The system itself doesnt become 7x faster, but file transfers and disk-heavy workloads become snappier.

I'd like people to test the stack, or at least be aware that the next update will have it.

I have tested it with over 40 different NVMe models. The only problematic one was the Apple T1 S3X NVMe, which wedged during testing. It already has a quirk.

So, to avoid anyone being unhappy that such a blessing landed without warning, here is the warning. :)

Abdelkader