diff --git a/test/proto/perf_control.proto b/test/proto/perf_control.proto
new file mode 100644
index 0000000000000000000000000000000000000000..8f113e4609cb29ade80ff0f1a929e4448dfb24ba
--- /dev/null
+++ b/test/proto/perf_control.proto
@@ -0,0 +1,154 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// An integration test service that covers all the method signature permutations
+// of unary/streaming requests/responses.
+syntax = "proto3";
+
+import "test/proto/messages.proto";
+import "test/proto/perf_stats.proto";
+
+package grpc.testing;
+
+enum ClientType {
+  SYNCHRONOUS_CLIENT = 0;
+  ASYNC_CLIENT = 1;
+}
+
+enum ServerType {
+  SYNCHRONOUS_SERVER = 0;
+  ASYNC_SERVER = 1;
+}
+
+enum RpcType {
+  UNARY = 0;
+  STREAMING = 1;
+}
+
+enum LoadType {
+  CLOSED_LOOP = 0;
+  POISSON = 1;
+  UNIFORM = 2;
+  DETERMINISTIC = 3;
+  PARETO = 4;
+}
+
+message PoissonParams {
+  double offered_load = 1;
+}
+
+message UniformParams {
+  double interarrival_lo = 1;
+  double interarrival_hi = 2;
+}
+
+message DeterministicParams {
+  double offered_load = 1;
+}
+
+message ParetoParams {
+  double interarrival_base = 1;
+  double alpha = 2;
+}
+
+message LoadParams {
+  oneof load {
+    PoissonParams poisson = 1;
+    UniformParams uniform = 2;
+    DeterministicParams determ = 3;
+    ParetoParams pareto = 4;
+  };
+}
+
+message ClientConfig {
+  repeated string server_targets = 1;
+  ClientType client_type = 2;
+  bool enable_ssl = 3;
+  int32 outstanding_rpcs_per_channel = 4;
+  int32 client_channels = 5;
+  int32 payload_size = 6;
+  // only for async client:
+  int32 async_client_threads = 7;
+  RpcType rpc_type = 8;
+  string host = 9;
+  LoadType load_type = 10;
+  LoadParams load_params = 11;
+}
+
+message ClientStatus {
+  ClientStats stats = 1;
+}
+
+// Request current stats
+message Mark {
+}
+
+message ClientArgs {
+  oneof argtype {
+    ClientConfig setup = 1;
+    Mark mark = 2;
+  }
+}
+
+message ServerConfig {
+  ServerType server_type = 1;
+  int32 threads = 2;
+  bool enable_ssl = 3;
+  string host = 4;
+}
+
+message ServerArgs {
+  oneof argtype {
+    ServerConfig setup = 1;
+    Mark mark = 2;
+  }
+}
+
+message ServerStatus {
+  ServerStats stats = 1;
+  int32 port = 2;
+}
+
+service TestService {
+  // One request followed by one response.
+  // The server returns the client payload as-is.
+  rpc UnaryCall(SimpleRequest) returns (SimpleResponse);
+
+  // One request followed by one response.
+  // The server returns the client payload as-is.
+  rpc StreamingCall(stream SimpleRequest) returns (stream SimpleResponse);
+}
+
+service Worker {
+  // Start server with specified workload
+  rpc RunServer(stream ServerArgs) returns (stream ServerStatus);
+
+  // Start client with specified workload
+  rpc RunClient(stream ClientArgs) returns (stream ClientStatus);
+}
diff --git a/test/proto/perf_stats.proto b/test/proto/perf_stats.proto
new file mode 100644
index 0000000000000000000000000000000000000000..0a98465f3d93c317455d830ea2334684cbe94b67
--- /dev/null
+++ b/test/proto/perf_stats.proto
@@ -0,0 +1,62 @@
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// An integration test service that covers all the method signature permutations
+// of unary/streaming requests/responses.
+syntax = "proto3";
+
+package grpc.testing;
+
+message ServerStats {
+  // wall clock time
+  double time_elapsed = 1;
+
+  // user time used by the server process and threads
+  double time_user = 2;
+
+  // server time used by the server process and all threads
+  double time_system = 3;
+}
+
+message HistogramData {
+  repeated uint32 bucket = 1;
+  double min_seen = 2;
+  double max_seen = 3;
+  double sum = 4;
+  double sum_of_squares = 5;
+  double count = 6;
+}
+
+message ClientStats {
+  HistogramData latencies = 1;
+  double time_elapsed = 2;
+  double time_user = 3;
+  double time_system = 4;
+}
+