diff --git a/src/ruby/qps/client.rb b/src/ruby/qps/client.rb
new file mode 100644
index 00000000000..0460168ad53
--- /dev/null
+++ b/src/ruby/qps/client.rb
@@ -0,0 +1,57 @@
+#!/usr/bin/env ruby
+
+# Copyright 2016, 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.
+
+# Worker and worker service implementation
+
+this_dir = File.expand_path(File.dirname(__FILE__))
+lib_dir = File.join(File.dirname(this_dir), 'lib')
+$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
+$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
+
+require 'grpc'
+require 'histogram'
+require 'src/proto/grpc/testing/services_services'
+
+class Poisson
+  def interarrival
+    @lambda_recip * (-Math.log(1.0-rand))
+  end
+  def advance
+    t = @next_time
+    @next_time += interarrival
+    t
+  end
+  def initialize(lambda)
+    @lambda_recip = 1.0/lambda
+    @next_time = Time.now + interarrival
+  end
+end
+
diff --git a/src/ruby/qps/qps-common.rb b/src/ruby/qps/qps-common.rb
new file mode 100644
index 00000000000..82c24d42b9a
--- /dev/null
+++ b/src/ruby/qps/qps-common.rb
@@ -0,0 +1,68 @@
+#!/usr/bin/env ruby
+
+# Copyright 2016, 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.
+
+# Worker and worker service implementation
+
+this_dir = File.expand_path(File.dirname(__FILE__))
+lib_dir = File.join(File.dirname(this_dir), 'lib')
+$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
+$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
+
+require 'grpc'
+
+# produces a string of null chars (\0 aka pack 'x') of length l.
+def nulls(l)
+  fail 'requires #{l} to be +ve' if l < 0
+  [].pack('x' * l).force_encoding('ascii-8bit')
+end
+
+# A EnumeratorQueue wraps a Queue yielding the items added to it via each_item.
+class EnumeratorQueue
+  extend Forwardable
+  def_delegators :@q, :push
+
+  def initialize(sentinel)
+    @q = Queue.new
+    @sentinel = sentinel
+  end
+
+  def each_item
+    return enum_for(:each_item) unless block_given?
+    loop do
+      r = @q.pop
+      break if r.equal?(@sentinel)
+      fail r if r.is_a? Exception
+      yield r
+    end
+  end
+end
+
+
diff --git a/src/ruby/qps/server.rb b/src/ruby/qps/server.rb
new file mode 100644
index 00000000000..edc06806aa0
--- /dev/null
+++ b/src/ruby/qps/server.rb
@@ -0,0 +1,68 @@
+#!/usr/bin/env ruby
+
+# Copyright 2016, 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.
+
+# Worker and worker service implementation
+
+this_dir = File.expand_path(File.dirname(__FILE__))
+lib_dir = File.join(File.dirname(this_dir), 'lib')
+$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
+$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
+
+require 'grpc'
+require 'qps-common'
+require 'src/proto/grpc/testing/messages'
+require 'src/proto/grpc/testing/services_services'
+
+class BenchmarkServiceImpl < Grpc::Testing::BenchmarkService::Service
+  def unary_call(req, _call)
+    sr = Grpc::Testing::SimpleResponse
+    pl = Grpc::Testing::Payload
+    sr.new(payload: pl.new(body: nulls(req.response_size)))
+  end
+  def streaming_call(reqs)
+    q = EnumeratorQueue.new(self)
+    Thread.new {
+      sr = Grpc::Testing::SimpleResponse
+      pl = Grpc::Testing::Payload
+      reqs.each do |req|
+        q.push(sr.new(payload: pl.new(body: nulls(req.response_size))))
+      end
+      q.push(self)
+    }
+    q.each_item
+  end
+end
+
+def benchmark_server(config)
+  
+end
+
+
diff --git a/src/ruby/qps/worker.rb b/src/ruby/qps/worker.rb
index 25300920f1e..ca60f519256 100755
--- a/src/ruby/qps/worker.rb
+++ b/src/ruby/qps/worker.rb
@@ -41,15 +41,49 @@ require 'optparse'
 require 'histogram'
 require 'etc'
 require 'facter'
+require 'client'
+require 'qps-common'
+require 'server'
 require 'src/proto/grpc/testing/services_services'
 
 class WorkerServiceImpl < Grpc::Testing::WorkerService::Service
-  def run_server(call)
+  def cpu_cores
+    Facter.value('processors')['count']
   end
-  def run_client(call)
+  def run_server(reqs)
+    q = EnumeratorQueue.new(self)
+    Thread.new {
+      reqs.each do |req|        
+        case req.argtype
+        when "setup"
+          server = BenchmarkServer.new(req.setup)
+          q.push(Grpc::Testing::ServerStatus.new(stats: server.mark(false), port: server.get_port))
+        when "mark"
+          q.push(Grpc::Testing::ServerStatus.new(stats: server.mark(req.mark.reset), cores: cpu_cores))
+        end
+      end
+      q.push(self)
+    }
+    q.each_item
+  end
+  def run_client(reqs)
+    q = EnumeratorQueue.new(self)
+    Thread.new {
+      reqs.each do |req|
+        case req.argtype
+        when "setup"
+          server = BenchmarkClient.new(req.setup)
+          q.push(Grpc::Testing::ClientStatus.new(stats: client.mark(false)))
+        when "mark"
+          q.push(Grpc::Testing::ClientStatus.new(stats: client.mark(req.mark.reset)))
+        end
+      end
+      q.push(self)
+    }
+    q.each_item
   end
   def core_count(_args, _call)
-    Grpc::Testing::CoreResponse.new(cores: Facter.value('processors')['count'])
+    Grpc::Testing::CoreResponse.new(cores: cpu_cores)
   end
   def quit_worker(_args, _call)
     Thread.new {