Use pre-fetching for ANALYZE When we have posix_fadvise() available, we can improve the performance of an ANALYZE by quite a bit by using it to inform the kernel of the blocks that we're going to be asking for. Similar to bitmap index scans, the number of buffers pre-fetched is based off of the maintenance_io_concurrency setting (for the particular tablespace or, if not set, globally, via get_tablespace_maintenance_io_concurrency()).
Reviewed-By: Heikki Linnakangas, Tomas Vondra Discussion: https://www.postgresql.org/message-id/VI1PR0701MB69603A433348EDCF783C6ECBF6EF0%40VI1PR0701MB6960.eurprd07.prod.outlook.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/c6fc50cb40285141fad401321ae21becbaea1c59 Modified Files -------------- src/backend/commands/analyze.c | 73 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 71 insertions(+), 2 deletions(-)
