diff --git i/src/test/modules/worker_spi/t/001_worker_spi.pl w/src/test/modules/worker_spi/t/001_worker_spi.pl
index c2938713134..093a038b005 100644
--- i/src/test/modules/worker_spi/t/001_worker_spi.pl
+++ w/src/test/modules/worker_spi/t/001_worker_spi.pl
@@ -52,6 +52,7 @@ $node->append_conf(
 shared_preload_libraries = 'worker_spi'
 worker_spi.database = 'mydb'
 worker_spi.total_workers = 3
+log_statement=all
 });
 $node->restart;
 
@@ -68,6 +69,9 @@ ok( $node->poll_query_until(
 # check their existence.
 my $worker1_pid = $node->safe_psql('mydb', 'SELECT worker_spi_launch(1);');
 my $worker2_pid = $node->safe_psql('mydb', 'SELECT worker_spi_launch(2);');
+
+sleep(3);
+
 ok( $node->poll_query_until(
 		'mydb',
 		qq[SELECT datname, count(datname)  FROM pg_stat_activity
diff --git i/src/test/modules/worker_spi/worker_spi.c w/src/test/modules/worker_spi/worker_spi.c
index 903dcddef97..ebd2120ec11 100644
--- i/src/test/modules/worker_spi/worker_spi.c
+++ w/src/test/modules/worker_spi/worker_spi.c
@@ -120,6 +120,8 @@ initialize_worker_spi(worktable *table)
 			elog(FATAL, "failed to create my schema");
 
 		debug_query_string = NULL;	/* rest is not statement-specific */
+
+		pg_usleep(USECS_PER_SEC*1);
 	}
 
 	SPI_finish();
@@ -127,6 +129,8 @@ initialize_worker_spi(worktable *table)
 	CommitTransactionCommand();
 	debug_query_string = NULL;
 	pgstat_report_activity(STATE_IDLE, NULL);
+
+	elog(LOG, "done");
 }
 
 void