> On Feb 25, 2021, at 12:52 AM, Nadav Amit <nadav.a...@gmail.com> wrote: > > > >> On Feb 25, 2021, at 12:40 AM, Peter Zijlstra <pet...@infradead.org> wrote: >> >> On Wed, Feb 24, 2021 at 11:29:04PM -0800, Nadav Amit wrote: >>> From: Nadav Amit <na...@vmware.com> >>> >>> Just as applications can use prefetch instructions to overlap >>> computations and memory accesses, applications may want to overlap the >>> page-faults and compute or overlap the I/O accesses that are required >>> for page-faults of different pages. [ [ snip ]
>> Interesting, but given we've been removing explicit prefetch from some >> parts of the kernel how useful is this in actual use? I'm thinking there >> should at least be a real user and performance numbers with this before >> merging. > > Can you give me a reference to the “removing explicit prefetch from some > parts of the kernel”? Oh. I get it - you mean we remove we remove the use of explicit memory prefetch from the kernel code. Well, I don’t think it is really related, but yes, performance numbers are needed.
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