On Mon, Feb 23, 2009 at 05:19:14PM +0100, Jasse Jansson wrote: > On Feb 23, 2009, at 11:54 AM, Bill Hacker wrote: >> Robert Luciani wrote: >>> Freddie Cash wrote: >>>> Booting FreeBSD 7.1 into a full KDE 4.2 >>>> desktop takes less than 5 minutes. This is using 3x 120 GB SATA >>>> drives in a single raidz1. >>> Wow 5 minutes?! >>> I don't think I'd be pushing it if I said that seems really slow. :S >>> On such a fast machine I'd be irritated if it took over a minute to >>> boot. On my >>> 3Ghz Athlon X2 w/ 2Gb RAM, DragonFly boots vkernels, hosting >>> services, and Gnome >>> in about a minute with my two 500Gb hammer drives. >> >> One minute 45 seconds into Xfce4 for a VIA C7 @ 1.5 GHz, 2 GB DDR-533, >> all-hammerfs on 2 natacontrol RAID1 'antique' 60 GB PATA UDMA 100 HDD. >> >> One minute 4 seconds into Xfce4 for an Intel T2130 @ 1.86 GHz 2 GB ? >> RAM, 1 X 120 GB 2.5" HDD, DFLY on 33 GB ad0s1, UFS2 with one hammer >> partition. >> >> RIADz looks to be the wall-time hog.... > > RAIDZ is known to be slow, even the main developers admit it if you > force them to it.
I'd recommend the individual seeing ~5 minute boot times try disabling ZFS prefetching. Place vfs.zfs.prefetch_disable="1" in /boot/loader.conf and reboot the machine. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
