Hi, Richard, I just had a quick investigation on disk space occupation for Yocto linux. Here are some findings and thoughts.
I built poky-image-minimal based on poky green release and yocto-0.9 release, within the build directory, I dumped the tmp dir size: Tmp dir size: Green: 7.4G Yocto-0.9: 27G The "work" dir occupies most of the space (~90%) in both releases. Here are the details with "work" dir. Green: 1.5M all-poky-linux 5.2G i586-poky-linux 675M i686-linux 1.1G qemux86-poky-linux Yocto-0.9: 1.8M all-poky-linux 16G i586-poky-linux 4.8G qemux86-poky-linux 3.5G x86_64-linux For the directory of "i586-poky-linux", Green has 34 sub directories, while Yocto-0.9 has 64 sub directories, which doubles Green's number. However the size is triple. This should be a problem. For a certain package directory, for example, ncurses-5.4-r14. Green: Total: 112M 12M image 36M ncurses-5.4 16M package 16M packages-split 18M staging-pkg 15M sysroot-destdir 1.1M temp Yocto-0.9: Total: 167M 13M image 36M ncurses-5.4 17M package 17M packages-split 16M sysroot-destdir 1.4M temp 2.5M deploy-ipks 2.6M deploy-rpms 4.0K ncurses.requires 116K ncurses.spec 40K pkgdata 12M pseudo 12K shlibs 2.5M sstate-build-deploy-ipk 2.6M sstate-build-deploy-rpm 33M sstate-build-package 16M sstate-build-populate-sysroot We saw in Yocto-0.9, size is 50% larger than Green release. Some directories within package are new in Yocto-0.9, like pseudo, sstate-build-*. I just took a glance at sstate.bbclass, the current logic seems that it will first copy directories (like deploy-rpms, deploy-ipks, package, package-split, sysroot, etc) into sstate-build-*, and then archive it into sstate-cache directory. So the first step of optimization from my thoughts are: 1) Can we remove the sstate-build-* directories after archive is done? 2) Or is it possible to omit the copy process and archive directly from directories (deploy-rpms, deploy-ipks, package, package-split, sysroot, etc) to sstate-cache? Thanks, Dongxiao _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
