Interesting. Doing the necessary rituals of sacrifice to get postgres started with the text segment mapped as huge pages yields nearly 10% speedup in a highly concurrent workload.
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The magic necessary (linker flags to align the text sufficiently, link to libhugetlbfs, editing elf headers with hugeedit --text, setting up accessible hugetlbfs) seems too big for most, but I wonder if there's a way that could be simplified.
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Oh, and besides being complicated: It currently also breaks perf profiles...
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