diff --git a/src/compiler/cpp_generator.h b/src/compiler/cpp_generator.h
index 2a003b106959d05ed27ec5199e5be6cd88f41404..d0343e9978b358e874512ba5d2bff8bb5755ad7d 100644
--- a/src/compiler/cpp_generator.h
+++ b/src/compiler/cpp_generator.h
@@ -41,6 +41,8 @@
 #include <memory>
 #include <vector>
 
+#include "src/compiler/config.h"
+
 #ifndef GRPC_CUSTOM_STRING
 #include <string>
 #define GRPC_CUSTOM_STRING std::string
diff --git a/src/core/ext/client_config/client_config_plugin.c b/src/core/ext/client_config/client_config_plugin.c
index 5e316134205700d668d2e53790e1b51676ea7c28..dc3629d38336011555ff73d1d5e5c595d91aa36a 100644
--- a/src/core/ext/client_config/client_config_plugin.c
+++ b/src/core/ext/client_config/client_config_plugin.c
@@ -43,10 +43,6 @@
 #include "src/core/ext/client_config/subchannel_index.h"
 #include "src/core/lib/surface/channel_init.h"
 
-#ifndef GRPC_DEFAULT_NAME_PREFIX
-#define GRPC_DEFAULT_NAME_PREFIX "dns:///"
-#endif
-
 static bool append_filter(grpc_channel_stack_builder *builder, void *arg) {
   return grpc_channel_stack_builder_append_filter(
       builder, (const grpc_channel_filter *)arg, NULL, NULL);
@@ -79,7 +75,7 @@ static bool set_default_host_if_unset(grpc_channel_stack_builder *builder,
 
 void grpc_client_config_init(void) {
   grpc_lb_policy_registry_init();
-  grpc_resolver_registry_init(GRPC_DEFAULT_NAME_PREFIX);
+  grpc_resolver_registry_init();
   grpc_subchannel_index_init();
   grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MIN,
                                    set_default_host_if_unset, NULL);
diff --git a/src/core/ext/client_config/resolver_registry.c b/src/core/ext/client_config/resolver_registry.c
index b5308a140c910506440c8eb5b8e0ad4ff3c295bf..bd5c683878d5957dc4720ca4ca8c85e37c9f2f55 100644
--- a/src/core/ext/client_config/resolver_registry.c
+++ b/src/core/ext/client_config/resolver_registry.c
@@ -40,22 +40,20 @@
 #include <grpc/support/string_util.h>
 
 #define MAX_RESOLVERS 10
+#define DEFAULT_RESOLVER_PREFIX_MAX_LENGTH 32
 
 static grpc_resolver_factory *g_all_of_the_resolvers[MAX_RESOLVERS];
 static int g_number_of_resolvers = 0;
 
-static char *g_default_resolver_prefix;
+static char g_default_resolver_prefix[DEFAULT_RESOLVER_PREFIX_MAX_LENGTH] =
+    "dns:///";
 
-void grpc_resolver_registry_init(const char *default_resolver_prefix) {
-  g_default_resolver_prefix = gpr_strdup(default_resolver_prefix);
-}
+void grpc_resolver_registry_init() {}
 
 void grpc_resolver_registry_shutdown(void) {
-  int i;
-  for (i = 0; i < g_number_of_resolvers; i++) {
+  for (int i = 0; i < g_number_of_resolvers; i++) {
     grpc_resolver_factory_unref(g_all_of_the_resolvers[i]);
   }
-  gpr_free(g_default_resolver_prefix);
   // FIXME(ctiller): this should live in grpc_resolver_registry_init,
   // however that would have the client_config plugin call this AFTER we start
   // registering resolvers from third party plugins, and so they'd never show
@@ -65,6 +63,17 @@ void grpc_resolver_registry_shutdown(void) {
   g_number_of_resolvers = 0;
 }
 
+void grpc_resolver_registry_set_default_prefix(
+    const char *default_resolver_prefix) {
+  const size_t len = strlen(default_resolver_prefix);
+  GPR_ASSERT(len < DEFAULT_RESOLVER_PREFIX_MAX_LENGTH &&
+             "default resolver prefix too long");
+  GPR_ASSERT(len > 0 && "default resolver prefix can't be empty");
+  // By the previous assert, default_resolver_prefix is safe to be copied with a
+  // plain strcpy.
+  strcpy(g_default_resolver_prefix, default_resolver_prefix);
+}
+
 void grpc_register_resolver_type(grpc_resolver_factory *factory) {
   int i;
   for (i = 0; i < g_number_of_resolvers; i++) {
@@ -108,22 +117,16 @@ static grpc_resolver_factory *resolve_factory(const char *target,
   *uri = grpc_uri_parse(target, 1);
   factory = lookup_factory_by_uri(*uri);
   if (factory == NULL) {
-    if (g_default_resolver_prefix != NULL) {
-      grpc_uri_destroy(*uri);
-      gpr_asprintf(&tmp, "%s%s", g_default_resolver_prefix, target);
-      *uri = grpc_uri_parse(tmp, 1);
-      factory = lookup_factory_by_uri(*uri);
-      if (factory == NULL) {
-        grpc_uri_destroy(grpc_uri_parse(target, 0));
-        grpc_uri_destroy(grpc_uri_parse(tmp, 0));
-        gpr_log(GPR_ERROR, "don't know how to resolve '%s' or '%s'", target,
-                tmp);
-      }
-      gpr_free(tmp);
-    } else {
+    grpc_uri_destroy(*uri);
+    gpr_asprintf(&tmp, "%s%s", g_default_resolver_prefix, target);
+    *uri = grpc_uri_parse(tmp, 1);
+    factory = lookup_factory_by_uri(*uri);
+    if (factory == NULL) {
       grpc_uri_destroy(grpc_uri_parse(target, 0));
-      gpr_log(GPR_ERROR, "don't know how to resolve '%s'", target);
+      grpc_uri_destroy(grpc_uri_parse(tmp, 0));
+      gpr_log(GPR_ERROR, "don't know how to resolve '%s' or '%s'", target, tmp);
     }
+    gpr_free(tmp);
   }
   return factory;
 }
diff --git a/src/core/ext/client_config/resolver_registry.h b/src/core/ext/client_config/resolver_registry.h
index 92e248d5488882cfceebb1c4e82a2e1034bacf45..4c6279b978906368eb7a38821af557906b5accd3 100644
--- a/src/core/ext/client_config/resolver_registry.h
+++ b/src/core/ext/client_config/resolver_registry.h
@@ -36,9 +36,12 @@
 
 #include "src/core/ext/client_config/resolver_factory.h"
 
-void grpc_resolver_registry_init(const char *default_prefix);
+void grpc_resolver_registry_init();
 void grpc_resolver_registry_shutdown(void);
 
+/** Set the default URI prefix to \a default_prefix. */
+void grpc_resolver_registry_set_default_prefix(const char *default_prefix);
+
 /** Register a resolver type.
     URI's of \a scheme will be resolved with the given resolver.
     If \a priority is greater than zero, then the resolver will be eligible
diff --git a/src/core/ext/lb_policy/grpclb/grpclb.c b/src/core/ext/lb_policy/grpclb/grpclb.c
index 8105c4415d83814bf3e25a6f3ac8defc436280d3..f45cff1a178eab77aa092fc5ce69e2657e8adffd 100644
--- a/src/core/ext/lb_policy/grpclb/grpclb.c
+++ b/src/core/ext/lb_policy/grpclb/grpclb.c
@@ -926,10 +926,8 @@ static lb_client_data *lb_client_data_create(glb_lb_policy *glb_policy) {
   grpc_closure_init(&lb_client->close_sent, close_sent_cb, lb_client);
   grpc_closure_init(&lb_client->srv_status_rcvd, srv_status_rcvd_cb, lb_client);
 
-  /* TODO(dgq): get the deadline from the client config instead of fabricating
-   * one here. */
-  lb_client->deadline = gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
-                                     gpr_time_from_seconds(3, GPR_TIMESPAN));
+  /* TODO(dgq): get the deadline from the parent channel. */
+  lb_client->deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC);
 
   /* Note the following LB call progresses every time there's activity in \a
    * glb_policy->base.interested_parties, which is comprised of the polling
diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
index 74dab8b5888f596b840014d1035f5c2a1b9ec858..7ff853bbd4cebec73d11b76d0f685e6fb30308f7 100644
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@@ -933,7 +933,8 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
 
   if (grpc_http_trace) {
     char *str = grpc_transport_stream_op_string(op);
-    gpr_log(GPR_DEBUG, "perform_stream_op_locked: %s", str);
+    gpr_log(GPR_DEBUG, "perform_stream_op_locked: %s; on_complete = %p", str,
+            op->on_complete);
     gpr_free(str);
   }
 
@@ -942,10 +943,6 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
     on_complete = grpc_closure_create(do_nothing, NULL);
   }
 
-  if (grpc_http_trace) {
-    gpr_log(GPR_DEBUG, "  on_complete = %p", on_complete);
-  }
-
   /* use final_data as a barrier until enqueue time; the inital counter is
      dropped at the end of this function */
   on_complete->next_data.scratch = CLOSURE_BARRIER_FIRST_REF_BIT;
@@ -1038,6 +1035,8 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op,
           (ssize_t)s->flow_controlled_buffer.length + (ssize_t)len;
       s->complete_fetch_covered_by_poller = op->covered_by_poller;
       if (flags & GRPC_WRITE_BUFFER_HINT) {
+        /* allow up to 64kb to be buffered */
+        /* TODO(ctiller): make this configurable */
         s->fetching_slice_end_offset -= 65536;
       }
       continue_fetching_send_locked(exec_ctx, t, s);
@@ -1264,7 +1263,6 @@ void grpc_chttp2_maybe_complete_recv_initial_metadata(grpc_exec_ctx *exec_ctx,
     if (s->seen_error) {
       while ((bs = grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames)) !=
              NULL) {
-        gpr_log(GPR_DEBUG, "discard %p", bs);
         incoming_byte_stream_destroy_locked(exec_ctx, bs, GRPC_ERROR_NONE);
       }
     }
@@ -1283,7 +1281,6 @@ void grpc_chttp2_maybe_complete_recv_message(grpc_exec_ctx *exec_ctx,
     while (s->final_metadata_requested && s->seen_error &&
            (bs = grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames)) !=
                NULL) {
-      gpr_log(GPR_DEBUG, "discard %p", bs);
       incoming_byte_stream_destroy_locked(exec_ctx, bs, GRPC_ERROR_NONE);
     }
     if (s->incoming_frames.head != NULL) {
@@ -1308,7 +1305,6 @@ void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_exec_ctx *exec_ctx,
     if (s->seen_error) {
       while ((bs = grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames)) !=
              NULL) {
-        gpr_log(GPR_DEBUG, "discard %p", bs);
         incoming_byte_stream_destroy_locked(exec_ctx, bs, GRPC_ERROR_NONE);
       }
     }
diff --git a/test/core/surface/channel_create_test.c b/test/core/surface/channel_create_test.c
index 450cc37233924b841d138f4061e1c8f78a36861c..580eb303f68604cdf36eff5ac1e06424f7ada89b 100644
--- a/test/core/surface/channel_create_test.c
+++ b/test/core/surface/channel_create_test.c
@@ -40,7 +40,7 @@ void test_unknown_scheme_target(void) {
   grpc_channel *chan;
   /* avoid default prefix */
   grpc_resolver_registry_shutdown();
-  grpc_resolver_registry_init("");
+  grpc_resolver_registry_init();
 
   chan = grpc_insecure_channel_create("blah://blah", NULL, NULL);
   GPR_ASSERT(chan != NULL);
diff --git a/test/core/surface/secure_channel_create_test.c b/test/core/surface/secure_channel_create_test.c
index b9525031678eb3957ecf8a79812d1f6b53451ef9..f8a9a6421155edfb9cc3508c1f698d0b241f8332 100644
--- a/test/core/surface/secure_channel_create_test.c
+++ b/test/core/surface/secure_channel_create_test.c
@@ -46,7 +46,7 @@ void test_unknown_scheme_target(void) {
   grpc_channel *chan;
   grpc_channel_credentials *creds;
   grpc_resolver_registry_shutdown();
-  grpc_resolver_registry_init("");
+  grpc_resolver_registry_init();
 
   creds = grpc_fake_transport_security_credentials_create();
   chan = grpc_secure_channel_create(creds, "blah://blah", NULL, NULL);
diff --git a/test/cpp/qps/gen_build_yaml.py b/test/cpp/qps/gen_build_yaml.py
index 4ff4e44b8b27266ddc298ac44e93297038b09cb0..369da2c8ca2fd97f39c4a9f2995502f9c66bee43 100755
--- a/test/cpp/qps/gen_build_yaml.py
+++ b/test/cpp/qps/gen_build_yaml.py
@@ -74,8 +74,8 @@ print yaml.dump({
       'name': 'json_run_localhost',
       'shortname': 'json_run_localhost:%s' % scenario_json['name'],
       'args': ['--scenarios_json', _scenario_json_string(scenario_json)],
-      'ci_platforms': ['linux', 'mac', 'posix', 'windows'],
-      'platforms': ['linux', 'mac', 'posix', 'windows'],
+      'ci_platforms': ['linux'],
+      'platforms': ['linux'],
       'flaky': False,
       'language': 'c++',
       'boringssl': True,
@@ -85,5 +85,6 @@ print yaml.dump({
       'timeout_seconds': 3*60
     }
     for scenario_json in scenario_config.CXXLanguage().scenarios()
+    if 'scalable' in scenario_json.get('CATEGORIES', [])
   ]
 })
diff --git a/test/cpp/util/byte_buffer_proto_helper.cc b/test/cpp/util/byte_buffer_proto_helper.cc
index 2512c9bdf8297efd8c7429a187d38ad89a5b226c..d625d6f3f47313bb3fe1b3383ffd3b0900f9df96 100644
--- a/test/cpp/util/byte_buffer_proto_helper.cc
+++ b/test/cpp/util/byte_buffer_proto_helper.cc
@@ -38,7 +38,7 @@ namespace testing {
 
 bool ParseFromByteBuffer(ByteBuffer* buffer, grpc::protobuf::Message* message) {
   std::vector<Slice> slices;
-  buffer->Dump(&slices);
+  (void)buffer->Dump(&slices);
   grpc::string buf;
   buf.reserve(buffer->Length());
   for (auto s = slices.begin(); s != slices.end(); s++) {
diff --git a/test/cpp/util/byte_buffer_test.cc b/test/cpp/util/byte_buffer_test.cc
index 1167c790d4e82684c0eb5482dd7c948b4ca7c8d5..2089a62011651b6601030d5c17abfdb482680311 100644
--- a/test/cpp/util/byte_buffer_test.cc
+++ b/test/cpp/util/byte_buffer_test.cc
@@ -100,7 +100,7 @@ TEST_F(ByteBufferTest, Dump) {
   slices.push_back(Slice(world, Slice::STEAL_REF));
   ByteBuffer buffer(&slices[0], 2);
   slices.clear();
-  buffer.Dump(&slices);
+  (void)buffer.Dump(&slices);
   EXPECT_TRUE(SliceEqual(slices[0], hello));
   EXPECT_TRUE(SliceEqual(slices[1], world));
 }
diff --git a/test/cpp/util/cli_call.cc b/test/cpp/util/cli_call.cc
index 98b9d930d6022610fef5cf8edfe1a400bfd363fa..1edffbe08eeba7260b4f5ef6eefd8689aa049fae 100644
--- a/test/cpp/util/cli_call.cc
+++ b/test/cpp/util/cli_call.cc
@@ -94,7 +94,7 @@ Status CliCall::Call(std::shared_ptr<grpc::Channel> channel,
 
   if (status.ok()) {
     std::vector<grpc::Slice> slices;
-    recv_buffer.Dump(&slices);
+    (void)recv_buffer.Dump(&slices);
 
     response->clear();
     for (size_t i = 0; i < slices.size(); i++) {
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index b68966eac787b159d9359ae2ba275acf5a16dbca..f28cbcc2159ad685708e23fddc752f93f9990020 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -32130,9899 +32130,14 @@
       "posix"
     ]
   }, 
-  {
-    "args": [
-      "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 2, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_generic_async_streaming_ping_pong_secure", 
-    "timeout_seconds": 180
-  }, 
   {
     "args": [
       "--scenarios_json", 
       "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 8, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_secure", 
-    "timeout_seconds": 180
-  }, 
-  {
-    "args": [
-      "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 1, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_one_server_core_secure", 
-    "timeout_seconds": 180
-  }, 
-  {
-    "args": [
-      "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
-    ], 
-    "boringssl": true, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "cpu_cost": 2, 
-    "defaults": "boringssl", 
-    "exclude_configs": [], 
-    "flaky": false, 
-    "language": "c++", 
-    "name": "json_run_localhost", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
-    ], 
-    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_ping_pong_secure", 
-    "timeout_seconds": 180
-  }, 
-  {
-    "args": [
-      "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
-    ], 
-    "boringssl": true, 
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@@ -42112,52 +32209,40 @@
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+    "cpu_cost": 2, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_316_channels_3162_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_secure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_316_channels_10000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 316, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 32, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42166,52 +32251,40 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_316_channels_10000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_qps_unconstrained_secure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_316_channels_31623_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 316, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 101, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "cpu_cost": 8, 
+    "cpu_cost": 2, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_316_channels_31623_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_ping_pong_secure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_316_channels_100000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 316, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 317, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42220,52 +32293,40 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_316_channels_100000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_qps_unconstrained_secure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_1000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "cpu_cost": 8, 
+    "cpu_cost": 2, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_1000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_secure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_3162_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 4, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_secure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42274,25 +32335,19 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_3162_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_secure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_10000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42301,79 +32356,61 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_10000_outstanding", 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_unconstrained_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_31623_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 32, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_generic_async_streaming_qps_one_server_core_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "cpu_cost": 8, 
+    "cpu_cost": 1, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_31623_outstanding", 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_one_server_core_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_100000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "cpu_cost": 8, 
+    "cpu_cost": 2, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_1000_channels_100000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_ping_pong_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_3162_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 3162, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42382,52 +32419,40 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_3162_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_unary_qps_unconstrained_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_10000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 3162, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 4, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "cpu_cost": 8, 
+    "cpu_cost": 2, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_10000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_ping_pong_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_31623_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 3162, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 11, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_unary_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"UNARY\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42436,52 +32461,40 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_31623_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_unary_qps_unconstrained_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_100000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 3162, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 32, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "cpu_cost": 8, 
+    "cpu_cost": 2, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_3162_channels_100000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_ping_pong_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_10000_channels_10000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 10000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_sync_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"SYNC_SERVER\"}, \"client_config\": {\"client_type\": \"SYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 16, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42490,52 +32503,40 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_10000_channels_10000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_sync_streaming_qps_unconstrained_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_10000_channels_31623_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 10000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 4, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_ping_pong_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 1, \"core_limit\": 1, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 1, \"async_client_threads\": 1, \"outstanding_rpcs_per_channel\": 1, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "cpu_cost": 8, 
+    "cpu_cost": 2, 
     "defaults": "boringssl", 
     "exclude_configs": [], 
     "flaky": false, 
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_10000_channels_31623_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_ping_pong_insecure", 
     "timeout_seconds": 180
   }, 
   {
     "args": [
       "--scenarios_json", 
-      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure_10000_channels_100000_outstanding\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 10000, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 10, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
+      "{\"scenarios\": [{\"name\": \"cpp_protobuf_async_streaming_qps_unconstrained_insecure\", \"warmup_seconds\": 0, \"benchmark_seconds\": 1, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"server_type\": \"ASYNC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"simple_params\": {\"resp_size\": 0, \"req_size\": 0}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}]}"
     ], 
     "boringssl": true, 
     "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
     "cpu_cost": 8, 
     "defaults": "boringssl", 
@@ -42544,12 +32545,9 @@
     "language": "c++", 
     "name": "json_run_localhost", 
     "platforms": [
-      "linux", 
-      "mac", 
-      "posix", 
-      "windows"
+      "linux"
     ], 
-    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure_10000_channels_100000_outstanding", 
+    "shortname": "json_run_localhost:cpp_protobuf_async_streaming_qps_unconstrained_insecure", 
     "timeout_seconds": 180
   }, 
   {