Add maintenance_io_concurrency to postgresql.conf.sample.

New GUC from commit fc34b0d9.

diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index e9f8ca775da956822d1558ed082a571dd9f570b7..7de4adc2ff19cb39d9935922744b9f2e5d8dfab6 100644 (file)
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -174,6 +174,7 @@
 # - Asynchronous Behavior -
 
 #effective_io_concurrency = 1          # 1-1000; 0 disables prefetching
+#maintenance_io_concurrency = 10       # 1-1000; 0 disables prefetching
 #max_worker_processes = 8              # (change requires restart)
 #max_parallel_maintenance_workers = 2  # taken from max_parallel_workers
 #max_parallel_workers_per_gather = 2   # taken from max_parallel_workers