On the Pixel 8 Pro and Pixel 9, we note just 0.26GB (275,336KiB) of locked RAM […], a very small amount most likely used for some background tasks in the OS. However, on the Pixel 9 Pro XL, this leaps to 2.91GB (3,051,936KiB) of Unevictable and Mlocked RAM. Subtract out the Unevictable RAM from the Pixel 9, and there’s an extra 2.64GB (2,776,603KiB) reserved on the Pro models.
Really interesting. I wonder what features the Pro XL has that the Pro version doesn’t to use over 10 times more RAM.