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4.9.11 kernel slow boot on imx6ul

Question asked by Mihaita Ivascu on Apr 9, 2019
Latest reply on Apr 17, 2019 by gusarambula

Hello,

 

    I would like to reduce boot time for 4.9.11 NXP kernel on imx6ul platform.

 

   I have two sections where kernel where boot process spends a lot of time:

 

First is when unpacking rootfs. I tried changing to LZ4 compression mode but were no improvements:

 

0.394669] Trying to unpack rootfs image as initramfs...
[ 2.553149] random: fast init done
[ 9.138342] Freeing initrd memory: 46208K (8267b000 - 8539b000)

 

Second is  when starting udev. I do not know how o reduce the time here:

 

Starting udev
[ 11.294191] udevd[135]: starting version 3.1.5
Populating dev cache

 

Does anyone have suggestions/experience on this topic?

 

Thanks,

      Mihaita

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