UEFI & ZFS

[Yamagi Burmeister]

Hello,
this is a known problem with Intel Skylake CPUs. Legacy boot os dead
slow, UEFI boot is blazing fast. Have a look at this thread, it contains
some more informations:

https://lists.freebsd.org/pipermail/freebsd-current/2015-December/059037.html

As far as I know now one has found / analyzed the root cause of this
until now.

Regard,


On Fri, 12 Feb 2016 15:36:10 -0500
"Thomas Laus" <lausts at acm.org> wrote:

> > I have a new Asus H170-Plus-D3 motherboard that will be used for a DOM0 Xen
> > Server.  It uses an Intel i5-6300 processor and a Samsung 840 EVO SSD.  I
> > would like to use ZFS on this new installation.  The Xen Kernel does not
> > have UEFI support at this time, so I installed FreeBSD CURRENT r295345 in
> > 'legacy mode'.  It takes about 7 minutes to go from the first '|' character
> > to getting the 'beastie' menu.  I changed the BIOS to UEFI and did another
> > installation.  The boot process goes in an instant.
> 
> Several others have the same problem. See here on the freebsd forums:
> 
> http://tinyurl.com/z9oldkc
> 
> That is my exact problem.  It takes 4 minutes to get a complete 'beastie' 
> menu and 7 minutes 34 seconds to login.
> 
> Tom
> 
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