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A comment on I've had bad luck with transparent hugepages on my Linux machines. Parent comment

Re:I've had bad luck with transparent hugepages on my Linux ... by jeffbee on Wednesday February 01, 2023 @09:51AM (#34611204)
They’re not leaks, it’s just that the slop at the end of a present page is potentially 512 times more than it would be with 4K pages.
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Re:I've had bad luck with transparent hugepages on my Linux ... by ckennelly on Wednesday February 01, 2023 @10:04PM (#34621517)
The default setting of max_ptes_none is also problematic.

On a stock kernel, it's 511. TCMalloc's docs recommend using max_ptes_none set to 0 for this reason: https://github.com/google/tcmalloc/blob/master/docs/tuning.m...

(Disclosure: I work on TCMalloc and authored the above doc.)

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