--- a/src/backend/utils/misc/injection_point.c
+++ b/src/backend/utils/misc/injection_point.c
@@ -357,6 +357,8 @@ InjectionPointDetach(const char *name)
    int         idx;
    int         max_inuse;

+   pg_usleep(5 * 1000000L);
+
    LWLockAcquire(InjectionPointLock, LW_EXCLUSIVE);