Re: [axboe-block:for-next] [block] bd4a633b6f: fsmark.files_per_sec -64.5% regression

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On Mon, Jun 24, 2024 at 03:45:57PM +0200, Niklas Cassel wrote:
Seems to be ATA SSD:
https://download.01.org/0day-ci/archive/20240624/202406241546.6bbd44a7-oliver.sang@xxxxxxxxx/job.yaml

ssd_partitions: "/dev/disk/by-id/ata-INTEL_SSDSC2BG012T4_BTHC428201ZX1P2OGN-part1"

Most likely btrfs does something different depending on the nonrot flag
being set or not. (And like you are suggesting, most likely the value of
the nonrot flag is somehow different after commit bd4a633b6f)

Yes, btrfs does.  That's why I'm curious about the before and after,
as I can't see any way how they would be set differently.  Right now
I can only claim with vitual AHCI devices, which claim to be rotational,
though.





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