pgbench: When using pipelining only do PQconsumeInput() when necessary. Up to now we did a PQconsumeInput() for each pipelined query, asking the OS for more input - which it often won't have, as all results might already have been sent. That turns out to have a noticeable performance impact.
Alvaro Herrera reviewed the idea to add the PQisBusy() check, but not this concrete patch. Author: Andres Freund <[email protected]> Discussion: https://postgr.es/m/[email protected] Backpatch: 14, where libpq/pgbench pipelining was introduced. Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/87bff68840d542011ed8f60427502fb90fdf2873 Modified Files -------------- src/bin/pgbench/pgbench.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
