Revert "Better cost estimation"

This reverts commit 4f98e25f8b.

test/cpp/qps/gen_build_yaml.py

@@ -66,7 +66,6 @@ def _scenario_json_string(scenario_json, is_tsan):
 def threads_required(scenario_json, where, is_tsan):
   scenario_json = mutate_scenario(scenario_json, is_tsan)
   if scenario_json['%s_config' % where]['%s_type' % where] == 'ASYNC_%s' % where.upper():
-    if scenario_json['client_config']['client_channels'] == 1: return 1
     return scenario_json['%s_config' % where].get('async_%s_threads' % where, 0)
   return scenario_json['client_config']['outstanding_rpcs_per_channel'] * scenario_json['client_config']['client_channels']
 

tools/run_tests/generated/tests.json

@@ -41350,7 +41350,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 100, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "tsan", 
@@ -41452,7 +41452,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "tsan", 
@@ -41504,7 +41504,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "tsan", 
@@ -41929,7 +41929,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 100, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "tsan", 
@@ -42031,7 +42031,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "tsan", 
@@ -42083,7 +42083,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "tsan", 
@@ -42560,7 +42560,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 100, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -42714,7 +42714,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -42792,7 +42792,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -43438,7 +43438,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 100, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -43592,7 +43592,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks", 
@@ -43670,7 +43670,7 @@
     "ci_platforms": [
       "linux"
     ], 
-    "cpu_cost": 2, 
+    "cpu_cost": "capacity", 
     "defaults": "boringssl", 
     "exclude_configs": [
       "asan-noleaks",