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RE: WANTED: nvme(4) driver testing on MP systems on -current

I have the hardware and can test this out on amd

-----Original Message-----
From: [] On 
Behalf Of Jaromír Dole?ek
Sent: Wednesday, September 21, 2016 4:54 PM
Subject: WANTED: nvme(4) driver testing on MP systems on -current


NVMe driver in NetBSD-current was recently tweaked to fix several MP and 
locking issues, and the driver is now marked as MPSAFE by default.

Most of this work was done on emulators since I lack the the hardware, so 
it's not clear if everything would work properly on real systems too.

Anyone having the hardware, I'd appreciate if you could check the driver 
out, and try to punish the drive by some heavy I/O test with parallel load 
if possible, and report results.

The driver should work on i386 and amd64, and is enabled in INSTALL/GENERIC 
kernels there, so you could just try to boot install iso from NetBSD daily 
builds, and send-pr any issues.

I'd also especially welcome if someone with sparc64 system could test the 
driver out, too.
The driver originates from OpenBSD where nvme(4) is enabled in GENERIC 
sparc64 kernel, so it should work. But it was not confirmed yet on 
NetBSD/sparc64. Note you might need fairly modern system, at least some 
Intel NVMe cards require PCIe Generation 3 to actually work, so this rules 
out e.g. T1s.

I'd also very welcome any benchmark results, it would be very interesting to 
share some IOPS figures.

Let me know the results, I'd like to update driver manpage to list known 
working hardware.

In any reports, please include the attachment fragment from dmesg, as there 
is quite significant different between attachment via apic/INTx and 
Also useful would be intrctl(8) output, to confirm interrupt handlers are 
dispatched properly to individual available CPUs.

Thank you.


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