topic Re: How to reduce boot/systemd time? in i.MX Processors

How to reduce boot/systemd time?

ming_liao — Wed, 24 Apr 2019 10:55:28 GMT

Hi,

I want to reduce boot time in i.mx8M mini,i find systemd consume more time,i use yocto to build my image,is there any way to disable systemd-xxx.service in image rather than in runtime?

root@imx8mmevk:~# systemd-analyze
Startup finished in 1.852s (kernel) + 3.861s (userspace) = 5.714s
multi-user.target reached after 3.657s in userspace

root@imx8mmevk:~# systemd-analyze blame

2.814s dev-mmcblk2p2.device
1.006s systemd-networkd.service
1.004s psplash-start.service
893ms systemd-hwdb-update.service
478ms klogd.service
384ms systemd-user-sessions.service
379ms rc-local.service
368ms systemd-vconsole-setup.service
368ms kmod-static-nodes.service
351ms systemd-udev-trigger.service
348ms ldconfig.service
337ms dev-hugepages.mount
337ms connman.service
334ms ofono.service
302ms sys-kernel-debug.mount
292ms systemd-modules-load.service
267ms tmp.mount
258ms systemd-logind.service
250ms dev-mqueue.mount
207ms rpcbind.service
192ms systemd-timesyncd.service
188ms dev-mmcblk2p1.device
164ms systemd-journal-flush.service
128ms systemd-remount-fs.service
125ms avahi-daemon.service
110ms psplash-quit.service
108ms syslogd.service
107ms ntpdate.service

Re: How to reduce boot/systemd time?

Bio_TICFSL — Mon, 29 Apr 2019 18:27:57 GMT

Hello ming

You can disable a service using "systemctl disable servicename" command or remove the related symlink under /etc/systemd/system/Please note that "systemd-analyze blame" provides only an estimation.

Also please note that some services take a time but are not listed clearly in the log and their time may be noted as spent by some another service.
So you need to compare total boot time with and without networking

Regards

Re: How to reduce boot/systemd time?

ming_liao — Fri, 14 Jun 2019 09:42:31 GMT

Hi,

Is there anyway to remove those services on image?i want an image without those services start when bootup