Right now we're running readahead early way too late. At a time when we've just sat doing no IO at all for 10 seconds whilst (amongst other things) we waited for a DHCP lease. We're also running it at a time when we're competing for disk bandwidth with other processes. The result is that disabling the service completely shows no change in boot time at all. http://www.codemonkey.org.uk/junk/bootchart-before.png Moving the readahead_early service to start really early wins back 4 seconds of boot up time. http://www.codemonkey.org.uk/junk/bootchart-after.png Any reason not to change this for F8 ? Note in the 'after' png that there's now a segment of no IO occuring between 31s and 33s. Maybe moving the later readahead service slightly earlier will provide additional wins. Dave -- http://www.codemonkey.org.uk -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
