Thread: pgsql: pgstat: Track more detailed relation IO statistics
pgstat: Track more detailed relation IO statistics Commit 28e626bde00 introduced the infrastructure for tracking more detailed IO statistics. This commit adds the actual collection of the new IO statistics for relations and temporary relations. See aforementioned commit for goals and high-level design. The changes in this commit are fairly straight-forward. The bulk of the change is to passing sufficient information to the callsites of pgstat_count_io_op(). A somewhat unsightly detail is that it currently is hard to find a better place to count fsyncs than in md.c, whereas the other pgstat_count_io_op() calls are in bufmgr.c/localbuf.c. As the number of fsyncs is tied to md.c implementation details, it's not obvious there is a better answer. Author: Melanie Plageman <melanieplageman@gmail.com> Reviewed-by: Andres Freund <andres@anarazel.de> Discussion: https://postgr.es/m/20200124195226.lth52iydq2n2uilq@alap3.anarazel.de Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/f30d62c2fc60acfa62d3b83a73dc9bf7f83cfe2f Modified Files -------------- src/backend/storage/buffer/bufmgr.c | 110 +++++++++++++++++++++++++++++----- src/backend/storage/buffer/freelist.c | 58 +++++++++++++----- src/backend/storage/buffer/localbuf.c | 13 +++- src/backend/storage/smgr/md.c | 24 ++++++++ src/include/storage/buf_internals.h | 8 ++- src/include/storage/bufmgr.h | 7 ++- 6 files changed, 184 insertions(+), 36 deletions(-)