Messages in this thread | | | Date | Mon, 9 Mar 2020 08:33:25 -0700 | From | Andi Kleen <> | Subject | Re: [PATCH] mm: clear 1G pages with streaming stores on x86 |
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> > Tested: > > Time to `mlock()` a 512GiB region on broadwell CPU > > AVG time (s) % imp. ms/page > > clear_page_erms 133.584 - 261 > > clear_page_nt 34.154 74.43% 67 > > Some macrobenchmark would be great too.
Yes especially something that actually uses the memory. I suspect you'll need something like the below
> That patchset is somewhat more complex trying to keep the memory around > the fault address hot in cache. In theory it should help to reduce latency > on the first access to the memory.
-Andi
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