https://community.nxp.com/t5/i-MX-Processors/Reducing-i-MX6ULL-Yocto-boot-time/m-p/2176963#M240992 <P>Hello,</P><P>I’m working on a custom board based on i.MX6ULL running Yocto, and I would like to reduce the boot time as much as possible.</P><P>So far, I have:</P><UL><LI><P>Disabled all unnecessary options from the kernel (menuconfig)</P></LI><LI><P>Reduced the Yocto image to the bare minimum, keeping only the required components</P></LI></UL><P>From the attached systemd-analyze plot (which also shows the Yocto and kernel versions used), I noticed that <STRONG>systemd-udev-trigger.service&nbsp;</STRONG>is taking a significant amount of time during boot.<BR />I already tried to disable some unused udev rules (e.g. by linking them to /dev/null such as ln -s /dev/null /etc/udev/rules.d/60-cdrom_id.rules), but the impact was limited.</P><P>Is there any recommended approach or best practice to further reduce the boot time in this case?<BR />Any tips or experiences from others working with i.MX6ULL fast boot would be greatly appreciated.</P><P>Thanks in advance!</P> Sat, 27 Sep 2025 21:40:10 GMT Phill231 2025-09-27T21:40:10Z https://community.nxp.com/t5/i-MX-Processors/Reducing-i-MX6ULL-Yocto-boot-time/m-p/2176963#M240992 <P>Hello,</P><P>I’m working on a custom board based on i.MX6ULL running Yocto, and I would like to reduce the boot time as much as possible.</P><P>So far, I have:</P><UL><LI><P>Disabled all unnecessary options from the kernel (menuconfig)</P></LI><LI><P>Reduced the Yocto image to the bare minimum, keeping only the required components</P></LI></UL><P>From the attached systemd-analyze plot (which also shows the Yocto and kernel versions used), I noticed that <STRONG>systemd-udev-trigger.service&nbsp;</STRONG>is taking a significant amount of time during boot.<BR />I already tried to disable some unused udev rules (e.g. by linking them to /dev/null such as ln -s /dev/null /etc/udev/rules.d/60-cdrom_id.rules), but the impact was limited.</P><P>Is there any recommended approach or best practice to further reduce the boot time in this case?<BR />Any tips or experiences from others working with i.MX6ULL fast boot would be greatly appreciated.</P><P>Thanks in advance!</P> Sat, 27 Sep 2025 21:40:10 GMT https://community.nxp.com/t5/i-MX-Processors/Reducing-i-MX6ULL-Yocto-boot-time/m-p/2176963#M240992 Phill231 2025-09-27T21:40:10Z https://community.nxp.com/t5/i-MX-Processors/Reducing-i-MX6ULL-Yocto-boot-time/m-p/2177642#M241029 <P>Hello,</P> <P>You can refer to this post:</P> <P><A href="https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Linux-Fast-Boot-on-i-MX6-Sabresd-Board/ta-p/1102298" target="_self">Linux Fast Boot on i.MX6 Sabresd Board</A></P> <P>Best regards.</P> Mon, 29 Sep 2025 17:51:28 GMT https://community.nxp.com/t5/i-MX-Processors/Reducing-i-MX6ULL-Yocto-boot-time/m-p/2177642#M241029 JorgeCas 2025-09-29T17:51:28Z https://community.nxp.com/t5/i-MX-Processors/Reducing-i-MX6ULL-Yocto-boot-time/m-p/2177946#M241043 Hello, thank you for the link. Do you have any advice on how to reduce the systemd-udev-trigger.service time? I have to use systemd on my system. Tue, 30 Sep 2025 06:51:19 GMT https://community.nxp.com/t5/i-MX-Processors/Reducing-i-MX6ULL-Yocto-boot-time/m-p/2177946#M241043 Phill231 2025-09-30T06:51:19Z