AnsweredAssumed Answered

i.MX8QXP Reserved Memory Size

Question asked by Kazuma Sasaki on Aug 25, 2019
Latest reply on Aug 27, 2019 by Kazuma Sasaki



My customer is making a product with i.MX8QuadXPlus and Linux BSP L4.14.98_2.0.0_ga.

They would like to reduce a memory size from cost point of view.


However, current linux BSP has consumed around 270MiB for reserved for system.

We seems it is difficult to apply low-specification platform such as DRAM density 512MiB.

How do we reduce these reserved memory? Can you provide us any advice to reduce reserved memory size? 


[    0.000000] Linux version 4.14.78-imx_4.14.78_1.0.0_ga+g66620c3 (oe-user@oe-host) (gcc version 7.3.0 (GCC)) #1 SMP PREEMPT Tue Dec 4 04:00:25 UTC 2018


[    0.000000] Memory: 1815668K/3068928K available (13500K kernel code, 1660K rwdata, 6012K rodata, 1280K init, 444K bss, 270220K reserved, 983040K cma-reserved)


root@imx8qxpmek:~# free -h -k

total used free shared buff/cache available
Mem: 2.7G 362M 2.2G 8.8M 83M 2.2G
Swap: 0B 0B 0B


Best Regards,

Kazuma Sasaki.