Added support for flexible huge page sizes on Linux. #2076
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This PR adds support for user configurable huge page sizes on Linux where huge pages with size other than 2 MB are supported. For example #2060 right now Linux on Apple M1 supports only 32 MB hugepages and doesn't support widely supported 2 MB huge pages. Also 32 MB and 64 kB huge pages can be tested on modern Amazon ARM instances with Neoverse N1 CPU (
*6g.*)Config option
"huge-pages"extended, now it accepts huge pages size in kB, not only boolean value.Examples:
"huge-pages": 2048,this equal to"huge-pages": truedefault value for 2 MB huge pages."huge-pages": 32768,- 32 MB huge pages."huge-pages": 64,- 64 kB huge pages.For command line usage added option
--hugepage-size. 1 GB pages is not a valid option, since they are already supported in a special way. This PR was checked with 64 kB, 2 MB and 32 MB huge page sizes, but it should support other sizes if it is supported by hardware and Linux.