diff --git a/eessi/testsuite/tests/apps/osu.py b/eessi/testsuite/tests/apps/osu.py
index 2fab94d7..83bbd0f4 100644
--- a/eessi/testsuite/tests/apps/osu.py
+++ b/eessi/testsuite/tests/apps/osu.py
@@ -53,6 +53,11 @@ class EESSI_OSU_Micro_Benchmarks_pt2pt(osu_benchmark):
     # unset num_tasks_per_node from the hpctestlib.
     num_tasks_per_node = None
 
+    # Set num_warmup_iters to 5 to reduce execution time, especially on slower interconnects
+    num_warmup_iters = 5
+    # Set num_iters to 10 to reduce execution time, especially on slower interconnects
+    num_iters = 10
+
     @run_after('init')
     def filter_scales_2gpus(self):
         """Filter out scales with < 2 GPUs if running on GPUs"""
@@ -169,6 +174,11 @@ class EESSI_OSU_Micro_Benchmarks_coll(osu_benchmark):
     # Unset num_tasks_per_node from hpctestlib
     num_tasks_per_node = None
 
+    # Set num_warmup_iters to 5 to reduce execution time, especially on slower interconnects
+    num_warmup_iters = 5
+    # Set num_iters to 10 to reduce execution time, especially on slower interconnects
+    num_iters = 10
+
     @run_after('init')
     def run_after_init(self):
         """hooks to run after init phase"""