8.0-RC1 ZFS loader extremely slow

[Daichi GOTO]

On Mon, 2 Nov 2009 09:53:30 +0000
Tom Evans <tevans.uk at googlemail.com> wrote:
> Hi all
> 
> I just installed 8.0-RC1 amd64 on a 6 gpt disk ZFS raidz1 (following the
> guide on the wiki), but
> have problems on reboot with the newly installed ZFS aware loader. The
> loader runs correctly,
> but incredibly slowly. It takes about 2 hours to get to the point where it
> enumerates the BIOS
> disks, although when it gets to that point, it does not take a long time to
> enumerate each
> disk. It takes about 2 minutes for each character change of the spinner!
> 
> Fully completing the loader takes somewhere between 2 and 8 hours (I got
> bored watching it),
> and works correctly. The loader from the memstick image works normally.
> 
> Daichi GOTO experienced something similar back in January [1], but there
> didn't seem to be
> any resolution to that problem. Disabling AHCI has no effect. Interestingly,
> we both have P45
> based motherboards.

Unfortunately, slow loader process of FreeBSD is still been in my box.
Even on latest 9-current/amd64, situation is the same...

As workaround, I have splited my disk to small UFS partitions including
minimum distrition install by make installworld/installkernel and
ZFS partition. Removed all loading kernel module config from 
/etc/loaderc.conf to get up boot speed. Yes, it's just a workaround
not fixed.

> I will try installing 8.0-RC2 tonight, and try to save verbose boot logs,
> dmidecode etc. If there
> is any other information I should be looking at, please let me know.
> 
> Cheers
> 
> Tom
> 
> 
> 
> [1]
> http://unix.derkeiler.com/Mailing-Lists/FreeBSD/current/2009-02/msg00108.html

-- 
Daichi GOTO
CEO | ONGS Inc.
81-42-316-7945 | daichi at ongs.co.jp | http://www.ongs.co.jp
LinkedIn: http://linkedin.com/in/daichigoto