Slow Grub on new mobo Q
Gene Heskett
gene.heskett at verizon.net
Thu Oct 2 13:27:14 UTC 2008
On Thursday 02 October 2008, G.Wolfe Woodbury wrote:
>Gene Heskett wrote:
>> Thanks. But this still does not explain why grub itself is so slow.
>>
>> After the bios is done, then the next thing one normally sees is the "Grub
>> stage 2 loading", but I'm watching a monitor telling me there is no input
>> drive for about 12 seconds between the bios clearing the screen, and that
>> printout.
>>
>> And normally that just sort of flickers for a few milliseconds, but that
>> now stays on screen for 2 or 3 seconds, then the screen is cleared again,
>> and about 10 seconds later the boot choice menu finally pops up. This
>> only took maybe 2 seconds total on the old motherboard, now it's a good
>> 20-25 seconds from the bios clearing the screen to the boot selection
>> menu.
>>
>> Its that time that I'm fussing about.
>
>Are you running on an x86_64 platform?
No, the installed compiler is 32 bit only.
>On my 64-bit machine, grub is running in 32-bit mode and it takes a fair
>bit of time for the POST to GRUB transition, just like you describe.
>
>My theory is that it is taking time to mode-switch from 64-bit to 32-bit
>mode and then back.
Possibly, but that sure seems like an excessive amount of time just to switch
modes, and it would only be from 64 to 32 anyway. I am using 32 bit kernels,
home brewed, and just last night got the PAE turned on in 2.6.27-rc8-4,
the -4 indicating its built smp etc. But that makes no diff in the wasted
time.
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
"No one gets too old to learn a new way of being stupid."
More information about the fedora-list
mailing list