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Re: [axboe-block:for-next] [block] bd4a633b6f: fsmark.files_per_sec -64.5% regression
- To: Niklas Cassel <cassel@xxxxxxxxxx>
- From: Christoph Hellwig <hch@xxxxxx>
- Date: Mon, 24 Jun 2024 17:20:28 +0200
- Cc: Christoph Hellwig <hch@xxxxxx>, kernel test robot <oliver.sang@xxxxxxxxx>, oe-lkp@xxxxxxxxxxxxxxx, lkp@xxxxxxxxx, Jens Axboe <axboe@xxxxxxxxx>, Damien Le Moal <dlemoal@xxxxxxxxxx>, Hannes Reinecke <hare@xxxxxxx>, linux-m68k@xxxxxxxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, drbd-dev@xxxxxxxxxxxxxxxx, nbd@xxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, ceph-devel@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, linux-mmc@xxxxxxxxxxxxxxx, linux-mtd@xxxxxxxxxxxxxxxxxxx, nvdimm@xxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, ying.huang@xxxxxxxxx, feng.tang@xxxxxxxxx, fengwei.yin@xxxxxxxxx
- Delivery-date: Mon, 24 Jun 2024 15:20:36 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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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