Re: [Lhns-devel] Re: Who's doing what with cpu/memory/node hotplug?

Andi Kleen
2004-05-18T21:05:01Z

> On the large SGI systems, starting all cpus is fairly fast. The time
> consuming parts of boot are:
> - probing disks (depends, of course, on the number)
> - VM init (mem_init, free_bootmem_core)
> - initializing memory structures (arch_memmap_init)
>
> By far, probing is the slowest part of boot on systems with a lot of
> disks.

We should really have parallel scanning for disks ...
That would help on smaller system too.

-Andi