Messages in this thread | | | Subject | Re: [PATCH 1/1] mm: vmscan: Reduce throttling due to a failure to make progress | From | Mike Galbraith <> | Date | Tue, 30 Nov 2021 13:51:10 +0100 |
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On Tue, 2021-11-30 at 13:00 +0100, Mike Galbraith wrote: > On Tue, 2021-11-30 at 11:22 +0000, Mel Gorman wrote: > > On Tue, Nov 30, 2021 at 11:14:32AM +0100, Mike Galbraith wrote: > > > > } > > > > + if (2 * write_pending <= reclaimable) > > > > > > That is always true here... > > > > > > > Always true for you or always true in general? > > "Here" as in the boxen located at my GPS coordinates :) > > > The intent of the check is "are a majority of reclaimable pages > > marked WRITE_PENDING?". It's similar to the check that existed prior > > to 132b0d21d21f ("mm/page_alloc: remove the throttling logic from the > > page allocator"). > > I'll put my trace_printk() back and see if I can't bend-adjust it.
As it sits, write_pending is always 0 with tail /dev/zero.
-Mike
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