On Wed, Oct 12, 2022 at 03:19:19PM -0500, Eric DeVolder wrote:
> We run here QEMU with the ability for 1024 DIMM slots.
QEMU, haha.
What is the highest count of DIMM slots which are hotpluggable on a
real, *physical* system today? Are you saying you can have 1K DIMM slots
on a board?
I hardly doubt that.
> So, for example, 1TiB requires 1024 DIMMs of 1GiB each with 128MiB
> memblocks, that results in 8K possible memory regions. So just going
> to 4TiB reaches 32K memory regions.
Lemme see if I understand this correctly: when a system like that
crashes, you want to kdump *all* those 4TiB in a vmcore? How long would
that dump take to complete? A day?
IOW, how does a realistic use case of this look like - not a QEMU one?
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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