Hello ollie,
>>Kernel image is stored on DoC (nftla) and the rootfs too.
>>
>>DoC can only transfer 1MB per second. If my rootfs is loaded
>>>from DoC it will load in 7 seconds and the kernel+linuxbios
>>use the other 1MB. So it needs 8 seconds at max loading the
>>data from DoC ?
>>
o> What are you talking about ?? Why are you LOADING root file system
o> instead of MOUNTING ??
Ooops. i'm sorry, You're right I do not load it, I mount it
from kernel (root=/dev/nftla). My fault.
>>
>>I don't really know what to do about the spin up problem:
>>- If I want to use the IDE drives, I have to wait for them
>> spinning up, right ?
>>
o> Practacally yes, but for things like DOM the spin up time ~= 0.
Do you mean DoC ? But real IDE drives (hard disk) need more
time to spin up, than the boot process from linuxbios will
need. I will try some more configs this weekend, because my
boot up time without init process is about 12 seconds (no
ide patch applied, ide device drivers in kernel (no
modules), linuxbios and kernel serial console activated,
unneeded modules deactivated). This 12 seconds is too long.
5 seconds with loaded drivers, init process would be enough.
I measured the needed times in seconds:
- power on 0s (starting point)
- linuxbios 4s (until kernel loaded)
- kernel 8s (until first message from init
process)
- init process 2s (can be optimized to < 1s)
- login prompt
Ron:
Can you send me your configs we talked about yesterday
(kernel ".config" and linuxbios config file). Perhaps I find
some differences concerning the speed. I will try the patch
from Andrew, too. I have to play with it.
Stefan
