ah I spoke too soon. I had extra DISTRO_FEATURES. I removed them and the root is ~2.5MB. Now it's worth a try.
Adam On Thu, May 15, 2014 at 3:58 PM, Adam Lee <[email protected]> wrote: > Hi Nicolas, thanks for your response. I built core-image-minimal in > cpio, but the size is whopping 69MB. It will take a couple seconds > just to load the image into the memory, which defeats the purpose of > using the ramdisk to boot. After watching 300 ms from reset-to-shell > boot video [1] using 1.5MB large kernel + rootfs combined, the size of > the core-image-minimal feels gargantuan and my boot time of ~7 seconds > feels like an eternity. That said, my goal is to reduce the boot time > through optimization of the current image. Writing custom boot loader > or severely crippling the rootfs is out of scope. So I thought the > tested and proven core-image-minimal-initramfs would be a great start. > > Adam > > [1] http://www.makelinux.com/emb/fastboot/omap > > On Thu, May 15, 2014 at 1:33 PM, Nicolas Dechesne > <[email protected]> wrote: >> On Thu, May 15, 2014 at 7:13 PM, Adam Lee <[email protected]> wrote: >>> Hello everyone, I thought I'd compare the performance of booting >>> rootfs from MMC vs ramdisk (the way Android is doing it). Some says it >>> may possibly take longer in ramdisk because the rootfs has to be first >>> loaded into memory. I'd like to test it out myself. >>> >>> So I discovered core-image-minimal-initramfs, and thought it was >>> exactly what I needed. However the build doesn't go far, because its >>> dependency initramfs-live-install [1] only seems to support x86: >>> >>> COMPATIBLE_HOST = "(i.86|x86_64).*-linux" >>> >>> Is this the limitation of current OE? or am I just looking at the wrong >>> corner? >> >> i recently had to build an initrd too, and notice that as well... so i >> am not sure exactly what that means. I am glad you asked... however if >> you want to test an initrd, you can simply build *any* image and make >> sure to build the 'cpio' from IMAGE_FSTYPES. you can then use the >> generated cpio archive as an initrd. >> -- >> _______________________________________________ >> Openembedded-devel mailing list >> [email protected] >> http://lists.openembedded.org/mailman/listinfo/openembedded-devel -- _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-devel
