On 02/14/2011 10:05 AM, Will Woods wrote: > xz compression makes the initrd 33% smaller (136M -> 90M). Another 1.96MB can be squeezed from the kernel drivers (lib/modules/.../*.ko...). >From a recent F15 alpha RC of install DVD: 10.608MB tree of *.ko.gz-9 23.608MB tree of *.ko 8.984MB tree of *.ko.xz-9 23.192MB cpio *.ko 7.022MB (cpio *.ko).xz-9 11.236MB tree of *.ko.gz-2 The 1.96MB is obtained from (8.98MB - 7.02MB). Build the initrd as the xz-compressed cpio archive containing the _uncompressed_ *.ko. The kernel applies "xz -d", "cpio --extract", and "gzip -c -2", getting a tree of *.ko.gz-2 that is (11.236MB - 10.608MB) = 0.628MB larger than before, at a cost of about 1 second for re-compressing while constructing the initramfs. But in the meantime initrd.img is about 2MB smaller. -- _______________________________________________ Anaconda-devel-list mailing list Anaconda-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/anaconda-devel-list
