On Wed, Oct 30, 2024 at 05:57:08PM +0100, Christoph Hellwig wrote:

On Wed, Oct 30, 2024 at 10:42:59AM -0600, Keith Busch wrote:

quoted

With FDP (with some minor rocksdb changes):

WAF:        1.67
IOPS:       1547
READ LAT:   1978us
UPDATE LAT: 2267us

Compared to the Numbers Hans presented at Plumbers for the Zoned XFS code,
which should work just fine with FDP IFF we exposed real write streams,
which roughly double read nad wirte IOPS and reduce the WAF to almost
1 this doesn't look too spectacular to be honest, but it sure it something.

Hold up... I absolutely appreciate the work Hans is and has done. But
are you talking about this talk?

https://lpc.events/event/18/contributions/1822/attachments/1464/3105/Zoned%20XFS%20LPC%20Zoned%20MC%202024%20V1.pdf

That is very much apples-to-oranges. The B+ isn't on the same device
being evaluated for WAF, where this has all that mixed in. I think the
results are pretty good, all things considered.
 

I just wish we could get the real infraѕtructure instead of some band
aid, which makes it really hard to expose the real thing because now
it's been taken up and directly wired to a UAPI.
one

I don't know what make of this. I think we're talking past each other.