Creating Your Own Tiny Linux Distribution Using Yocto: Keeping it Small With
summary
Builds with Yocto and poky-tiny swap glibc for musl, replace many util-linux bits with busybox and add dropbear, shrinking a reference core-image from ~4 MB rootfs / 7 MB kernel / 9.1 s boot to ~1 MB rootfs / 2.7 MB kernel / 0.93 s boot by using core-image-tiny-initramfs that loads rootfs into RAM. A real product example cuts a 13 MB rootfs, 15 MB kernel and 42 s boot down to ~1.2 MB rootfs, 5.4 MB kernel and ~3.7 s by distro overrides, tuned kernel defconfig and trimming userland. Tools used: Yocto distro layer overrides and boot tracing with butcherd.
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chapters (6)
- 0:00Introduction
- 4:07What is a distro
- 11:51Yocto Tiny
- 18:42Creating your own distro
- 22:21Analysis
- 30:21Comparison
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