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authorTom Gundersen <teg@jklm.no>2012-05-18 04:18:47 +0200
committerDave Reisner <dreisner@archlinux.org>2012-05-18 19:09:38 +0200
commit7eb40daaae07520557d20fd41941026108faddfa (patch)
treea67e040425bee6c6167afae7afc316f3ff041976 /lsinitcpio.1.txt
parentf88b2b53a4b2dcb177cb8b7197e2a61fd510c7ef (diff)
downloadmkinitcpio-7eb40daaae07520557d20fd41941026108faddfa.tar.gz
mkinitcpio-7eb40daaae07520557d20fd41941026108faddfa.tar.xz
init: add timestamp at start of initramfs if binary exists
This will allow us to tell how much time was spent in the initramfs, which might be good for working on optimizations and making sure we don't regress. If a binary able to produce the timestamp is not installed this is a noop. I'll post separately an install hook to the systemd package that will install systemd-timestamp. However, it would be trivial to replace this by an independent implementation if people want to use this without systemd. With this patch I get the following on my (ancient) laptop: $ systemd-analyze Startup finished in 294ms (kernel) + 2684ms (initramfs) + 15741ms (userspace) = 18720ms FWIW, 1 second is spent on inserting the needed modules, and 1.5 seconds on mounting the rootfs (mounting btrfs is slow!). Signed-off-by: Tom Gundersen <teg@jklm.no> Signed-off-by: Dave Reisner <dreisner@archlinux.org>
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