Tony Nelson wrote: > In any case, readahead does not improve boot time, and unless you can show > how to make readahead improve boot time, there is unlikely to be any work > done on making it keep reading all the files after updates. It doesn't > make booting any slower if readahead can't find its files, or any faster if > it can. Well, actually I don't quite agree (see also my "boot-time / readahead investigations" thread) with stock readahead (0:59): http://sandeen.net/fedora_boot/bootchart-stockreadahead-noselinux.png http://sandeen.net/fedora_boot/seekwatcher-stockreadahead-noselinux.png without readahead (0:49): http://sandeen.net/fedora_boot/bootchart-noreadahead-noselinux.png http://sandeen.net/fedora_boot/seekwatcher-noreadahead-noselinux.png with tweaked readahead (updated/sorted lists, run earlier) (0:44): http://sandeen.net/fedora_boot/bootchart-fixedreadahead-noselinux.png http://sandeen.net/fedora_boot/seekwatcher-fixedreadahead-noselinux.png so, it's a small win for me. The approach still feels a bit inelegant to me, but it does seem to save a bit if it's done properly. But from above, if it's done wrong, it hurts a lot more than it helps. Tossing a default list out there and hoping for the best probably won't work, at any rate. -Eric -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
