Messages in this thread | | | Subject | Re: [PATCH v8 0/6] optimize memblock_next_valid_pfn and early_pfn_valid on arm and arm64 | From | Pavel Tatashin <> | Date | Fri, 4 May 2018 12:53:40 -0400 |
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> I'm wondering, ain't simple enabling of config > DEFERRED_STRUCT_PAGE_INIT provide even better speed-up? If that is the > case then it seems like this series is not needed at all, right? > I am not sure why is this config optional. It looks like it could be > enabled by default or even unconditionally considering that with > commit c9e97a1997fb ("mm: initialize pages on demand during boot") the > deferred code is statically disabled after all the pages are > initialized.
Hi Daniel,
Currently, deferred struct pages are initialized in parallel only on NUMA machines. I would like to make a change to use all the available CPUs even on a single socket systems, but that is not there yet. So, I believe Jia's performance improvements are still relevant.
Thank you, Pavel
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