In pg_upgrade, copy fsm, vm, and extent files by checking for file existence via open(), rather than collecting a directory listing and looking up matching relfilenode files with sequential scans of the array. This speeds up pg_upgrade by 2x for a large number of tables, e.g. 16k.
Per observation by Ants Aasma. Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/29add0de4920e4f448a30bfc35798b939c211d97 Modified Files -------------- contrib/pg_upgrade/file.c | 55 ---------- contrib/pg_upgrade/pg_upgrade.h | 2 - contrib/pg_upgrade/relfilenode.c | 208 +++++++++++++++----------------------- 3 files changed, 82 insertions(+), 183 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
