Slow MMC IO with Raspberry CM3+ Module
Mario Lombardo
ml at akamo.de
Wed Nov 3 11:39:44 CET 2021
Dear u-boot list,
I recently compiled (latest: 2021.10) code of uboot as a boot loader for the Compute Module 3+ (Raspberry). Everything works fine except one issue: the IO from the storage is extreme slow. I read about issues in the past related to ext file systems. However the present issue relates to both ext and fat file systems so I assume its cause is different.
This is what I did:
U-Boot> setenv pio_kernel "recovery/kernel.img"
U-Boot> setenv pio_initrd "recovery/initrd.img"
U-Boot> fatload mmc 0:1 ${kernel_addr_r} ${pio_kernel}
5299624 bytes read in 45262 ms (114.3 KiB/s)
U-Boot> fatload mmc 0:1 ${ramdisk_addr_r} ${pio_initrd}
24239932 bytes read in 206978 ms (114.3 KiB/s)
The configuration of by build is attached.
Is there anyone else experiencing this kind of issues?
Thank you very much.
Mario
-------------- next part --------------
A non-text attachment was scrubbed...
Name: uboot_config.gz
Type: application/x-gzip
Size: 8648 bytes
Desc: not available
URL: <https://lists.denx.de/pipermail/u-boot/attachments/20211103/2ac94849/attachment.bin>
More information about the U-Boot
mailing list