On Thu, Sep 15, 2011 at 7:25 AM, Ralf Corsepius <rc040203@xxxxxxxxxx> wrote: > 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. The number of CPUs shouldn't really matter as it is mostly I/O bound. > 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. Do they both start the same services? Unless you "tweaked" your fedora installation where we start a bunch of stuff that pretty much nobody would use in a typical desktop system that is to be expected. -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
