Re: [Patch 0/7] Implement crashkernel=auto

Bernhard Walle
2009-08-07T21:26:30Z

Andi Kleen schrieb:
>> As an initial approximation I would use a 32nd of low memory.
>
> That means a 1TB machine will have a 32GB crash kernel.
>
> Surely that's excessive?!?
>
> It would be repeating all the same mistakes people made with hash tables
> several years ago.

The idea of Eric was to shrink the reserved memory in an init script. I
doubt that the 1 TB machine will have any problems or performance issue
when booting with (1 TB - 32 GB) memory.

> It doesn't sound reasonable to Andi.
>
> Why do you even want to grow the crash kernel that much? Is there
> any real problem with a 64-128MB crash kernel?

Try it out. No chance for 64-128MB crashkernel on "medium" IA64 machines.

Regards,
Bernhard