diff --git a/test/cpp/qps/gen_build_yaml.py b/test/cpp/qps/gen_build_yaml.py
index 1ef8f65..776283c 100755
--- a/test/cpp/qps/gen_build_yaml.py
+++ b/test/cpp/qps/gen_build_yaml.py
@@ -63,6 +63,11 @@
   return (scenario_json['num_clients'] * client +
           scenario_json['num_servers'] * server)
 
+def maybe_exclude_gcov(scenario_json):
+  if scenario_json['client_config']['client_channels'] > 100:
+    return ['gcov']
+  return []
+
 print yaml.dump({
   'tests': [
     {
@@ -76,7 +81,7 @@
       'boringssl': True,
       'defaults': 'boringssl',
       'cpu_cost': guess_cpu(scenario_json, False),
-      'exclude_configs': ['tsan', 'asan'],
+      'exclude_configs': ['tsan', 'asan'] + maybe_exclude_gcov(scenario_json),
       'timeout_seconds': 2*60,
       'excluded_poll_engines': scenario_json.get('EXCLUDED_POLL_ENGINES', []),
       'auto_timeout_scaling': False
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index 8eb5303..e2a7907 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -58026,7 +58026,8 @@
     "defaults": "boringssl", 
     "exclude_configs": [
       "tsan", 
-      "asan"
+      "asan", 
+      "gcov"
     ], 
     "excluded_poll_engines": [], 
     "flaky": false,