On 09/14/2011 06:23 PM, drago01 wrote: > On Wed, Sep 14, 2011 at 5:34 PM, Ralf Corsepius<rc040203@xxxxxxxxxx> wrote: >> My netbook boots up F14 in ca. 60 secs, while F15 boots up in 62 secs. >> I'd call this "below measurement accuracy". > > What kind of disk is that? It's ca. 3 years old WD Scorpio Blue 160 GB ( WD1600BEVT) in a first generation Atom N270 (32bit only) based netbook w/ 2GB RAM. > For a mechanical drive any gain from > parallel startup would get killed by disk seeks. Sure, slow disks certainly are a factor contributing to slow bootup times. In general, there are other factors coming into play, such as parallel startup using more memory, parallelization not providing many advantages on systems with a small number of CPU cores, hard synchronisation points in the bootup process, poorly configured "services", ... and finally ... bugs. Anyway, some more figures: On the same machine, bootup times when booting from a (slow) external (IDE) USB2 HD: - Fedora 15/i386: ca. 135 secs. - Ubuntu 11.04/i386: ca. 70 secs. [Here bootup time: Wirst watch measured time from "grub prompt" to "login screen"] It shows the effect of slow disks (60secs w/ internal HD vs. 2.15 minutes w/ USB HD), but raises questions on why Ubuntu appears to be so much faster in this configuration. Ralf -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
