Add support for basic NUMA awareness Add basic NUMA awareness routines, using a minimal src/port/pg_numa.c portability wrapper and an optional build dependency, enabled by --with-libnuma configure option. For now this is Linux-only, other platforms may be supported later.
A built-in SQL function pg_numa_available() allows checking NUMA support, i.e. that the server was built/linked with the NUMA library. The main function introduced is pg_numa_query_pages(), which allows determining the NUMA node for individual memory pages. Internally the function uses move_pages(2) syscall, as it allows batching, and is more efficient than get_mempolicy(2). Author: Jakub Wartak <jakub.war...@enterprisedb.com> Co-authored-by: Bertrand Drouvot <bertranddrouvot...@gmail.com> Reviewed-by: Andres Freund <and...@anarazel.de> Reviewed-by: Álvaro Herrera <alvhe...@alvh.no-ip.org> Reviewed-by: Tomas Vondra <to...@vondra.me> Discussion: https://postgr.es/m/CAKZiRmxh6KWo0aqRqvmcoaX2jUxZYb4kGp3N%3Dq1w%2BDiH-696Xw%40mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/65c298f61fc70f2f960437c05649f71b862e2c48 Modified Files -------------- .cirrus.tasks.yml | 2 + configure | 187 ++++++++++++++++++++++++++++++++++++ configure.ac | 14 +++ doc/src/sgml/func.sgml | 13 +++ doc/src/sgml/installation.sgml | 22 +++++ meson.build | 23 +++++ meson_options.txt | 3 + src/Makefile.global.in | 6 +- src/backend/utils/misc/guc_tables.c | 2 +- src/include/catalog/catversion.h | 2 +- src/include/catalog/pg_proc.dat | 4 + src/include/pg_config.h.in | 3 + src/include/port/pg_numa.h | 40 ++++++++ src/include/storage/pg_shmem.h | 1 + src/makefiles/meson.build | 3 + src/port/Makefile | 1 + src/port/meson.build | 1 + src/port/pg_numa.c | 120 +++++++++++++++++++++++ 18 files changed, 444 insertions(+), 3 deletions(-)
