diff --git a/.github/workflows/manual.yml b/.github/workflows/manual.yml
index 49c6e32c..4bac6683 100644
--- a/.github/workflows/manual.yml
+++ b/.github/workflows/manual.yml
@@ -87,3 +87,32 @@ jobs:
         ./misc/travis/gotest.sh
     - name: Stop memcached servers
       run: ./misc/memcached_server stop
+
+  reference:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        pyver: ["3.12"]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup system dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install memcached libmemcached-dev g++
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.pyver }}
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+    - name: Install python dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install setuptools future python-memcached pylibmc
+    - name: Start memcached servers
+      run: ./misc/memcached_server start
+    - name: Run benchmark
+      run: |
+        ./misc/travis/benchmark.sh
+    - name: Stop memcached servers
+      run: ./misc/memcached_server stop
diff --git a/CMakeLists.txt b/CMakeLists.txt
index bddda399..04a4799a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@ if (NOT CMAKE_BUILD_TYPE)
 endif (NOT CMAKE_BUILD_TYPE)
 
 set(CMAKE_CXX_FLAGS_COMMON "-Wall -fno-rtti -fno-exceptions")
-set(CMAKE_CXX_FLAGS_DEBUG "-DDEBUG -g2 ${CMAKE_CXX_FLAGS_COMMON} -fsanitize=thread" CACHE STRING "CXX DEBUG FLAGS" FORCE)
+set(CMAKE_CXX_FLAGS_DEBUG "-DDEBUG -g2 ${CMAKE_CXX_FLAGS_COMMON}" CACHE STRING "CXX DEBUG FLAGS" FORCE)
 set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3 ${CMAKE_CXX_FLAGS_COMMON}" CACHE STRING "CXX RELEASE FLAGS" FORCE)
 set(CMAKE_INSTALL_INCLUDE include CACHE PATH "Output directory for header files")
 set(CMAKE_INSTALL_LIBDIR lib CACHE PATH "Output directory for libraries")
diff --git a/misc/runbench.py b/misc/runbench.py
index 40b2b49a..b8979daa 100644
--- a/misc/runbench.py
+++ b/misc/runbench.py
@@ -96,7 +96,7 @@ def __init__(self):
     def __unicode__(self):
         m = self.mean()
         d = self.stddev()
-        fmt = u"%.3gs, σ=%.3g, n=%d, snr=%.3g:%.3g".__mod__
+        fmt = u"%.3gs, \u03C3=%.3g, n=%d, snr=%.3g:%.3g".__mod__
         return fmt((m, d, len(self.laps)) + ratio(m, d))
 
     __str__ = __unicode__
@@ -139,7 +139,7 @@ def bench_get(mc, key, data):
 
 @benchmark_method
 def bench_set(mc, key, data):
-    if isinstance(mc.mc, libmc.Client):
+    if isinstance(mc.mc, libmc.Client) or isinstance(mc.mc, libmc.ThreadedClient):
         if not mc.set(key, data):
             logger.warn('%r.set(%r, ...) fail', mc, key)
     else:
@@ -156,7 +156,7 @@ def bench_get_multi(mc, keys, pairs):
 @benchmark_method
 def bench_set_multi(mc, keys, pairs):
     ret = mc.set_multi(pairs)
-    if isinstance(mc.mc, libmc.Client):
+    if isinstance(mc.mc, libmc.Client) or isinstance(mc.mc, libmc.ThreadedClient):
         if not ret:
             logger.warn('%r.set_multi fail', mc)
     else:
@@ -235,6 +235,10 @@ def make_pylibmc_client(servers, **kw):
         name='libmc(md5 / ketama / nodelay / nonblocking, from douban)',
         factory=lambda: Prefix(__import__('libmc').Client(servers, comp_threshold=4000), 'libmc1')
     ),
+    Participant(
+        name='libmc(md5 / ketama / nodelay / nonblocking / threaded, from douban)',
+        factory=lambda: Prefix(__import__('libmc').ThreadedClient(servers, comp_threshold=4000), 'libmc2')
+    ),
 ]
 
 
diff --git a/setup.py b/setup.py
index c9807b95..afc15c1d 100644
--- a/setup.py
+++ b/setup.py
@@ -89,7 +89,7 @@ def run_tests(self):
         # import here, cause outside the eggs aren't loaded
         import pytest
         errno = pytest.main(shlex.split(self.pytest_args))
-        sys.exit(errno)
+        os._exit(errno)
 
 
 setup(