On Thu, 2009-01-29 at 22:54 -0500, Bill Nottingham wrote: > Brian Maly (bmaly@xxxxxxxxxx) said: > >> My question is simply: How do they (the intel developers) reach that > >> boot time without removing all those comfort services (udev etc.)? > >> > > (1) its UEFI > > 1) I've *NEVER* seen an EFI BIOS that wasn't abysmally slow > 2) bootchart doesn't measure BIOS speed anyway > > > (2) rc stuff is parallelized (/rc_parallel/="YES") during the startup of > > the rc scripts > > (3) /boot lives on the solid state disk and root fs runs in ramdisk > > It's not tricks - if you really want, there should be data from Arjan > and Auke's plumber's conference talk. In the fedora chart there seem to be a huge time (form sec 2.5, to sec 15) where the only things running are polymouthd and nash-hotplug, then another gap when udev starts, then everything start booting more or less in parallel. In moblin there is no plymouthd/nash-hotplug and udev seem not to introduce delays. What are plymouthd/nash-hotplug doing ? (if its their fault) Why fedora's udev seem to slow down another bit while moblin's udev seem not ? Simo. -- Simo Sorce * Red Hat, Inc * New York -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
