On Sun, Dec 20, 2020 at 04:27:50PM +0800, Baoquan He wrote:
> VMware observed a performance regression during memmap init on their platform,
> and bisected to commit 73a6e474cb376 ("mm: memmap_init: iterate over memblock
> regions rather that check each PFN") causing it.
>
> Before the commit:
>
VMware observed a performance regression during memmap init on their platform,
and bisected to commit 73a6e474cb376 ("mm: memmap_init: iterate over memblock
regions rather that check each PFN") causing it.
Before the commit:
[0.033176] Normal zone: 1445888 pages used for memmap
[0.033176] Nor
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