Re: [PATCH v16 00/26] Improve write performance for zoned UFS devices

Bart Van Assche
2024-11-19T18:52:39Z

On 11/19/24 4:25 AM, Christoph Hellwig wrote:
> What's your exact test setup?

Pixel 2023 and 2025 development boards with android-mainline kernel
(https://android.googlesource.com/kernel/common/+/refs/heads/android-mainline).
The android mainline kernel tracks the upstream kernel closely. While
the performance of Pixel development boards is
identical to that of the corresponding smartphone generation, these
development boards have the following advantages:
- A UFS socket that allows swapping UFS devices without any soldering.
- A USB port that makes it easy to monitor and capture kernel log
messages.

> Which upstream kernel support zoned UFS device are using?

A Micron ZUFS device. Micron zoned UFS devices have a zone size that is
a power of two.

Thanks,

Bart.