** Tags added: fr-1977 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/1958148
Title: mkinitramfs is too slow Status in initramfs-tools package in Ubuntu: In Progress Bug description: On the Nezha board creating an initrd takes more than 1 hour. The compression level -19 for zstd is unwisely chosen. Here are durations and compression results for an SiFive Unmatched board with four cores using zstd: -T0 -1 => 13.92s, 136298155 bytes -T0 -2 => 15.73s, 131717830 bytes -T0 -3 => 26.11s, 127434653 bytes -T0 -4 => 29.31s, 126924540 bytes -T0 -5 => 36.44s, 125296557 bytes -T0 -6 => 39.36s, 124781669 bytes -T0 -7 => 46.56s, 116200665 bytes -T0 -8 => 51.95s, 113172941 bytes -T0 -9 => 55.89s, 112835937 bytes -T0 -10 => 61.32s, 108326876 bytes -T0 -11 => 64.32s, 108115060 bytes -T0 -12 => 76.37s, 108016478 bytes -T0 -13 => 148.99s, 109121308 bytes -T0 -14 => 156.58s, 108908574 bytes -T0 -15 => 228.64s, 109213554 bytes -T0 -16 => 380.26s, 107260643 bytes -T0 -17 => 453.36s, 103679714 bytes -T0 -18 => 714.79s, 100402249 bytes -T0 -19 => 1046.58s, 100188713 bytes Compression level between -2 to -10 offer a good compromise between CPU time and compression results. Ideally there would be a parameter that we could pass to mkinitfs. But for as fast solution we should simply replace -19 by -9 in mkinitramfs. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1958148/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
