Re: [PATCH 1/2] sched/wait: Break up long wake list walk

[Andi Kleen]

> Still, I don't think this problem is THP specific.  If there is a hot
> regular page getting migrated, we'll also see many threads get
> queued up quickly.  THP may have made the problem worse as migrating
> it takes a longer time, meaning more threads could get queued up.

Also THP probably makes more threads collide because the pages are larger.
But still it can all happen even without THP.

-Andi