diff --git a/benchmarks/spawn/Android.bp b/benchmarks/spawn/Android.bp
new file mode 100644
index 0000000..1295e2b
--- /dev/null
+++ b/benchmarks/spawn/Android.bp
@@ -0,0 +1,99 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+// 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.
+//
+// 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.
+//
+
+cc_benchmark {
+    name: "bionic-spawn-benchmarks",
+    srcs: ["spawn_benchmarks.cpp"],
+    static_libs: ["libbase"],
+
+    // Install these binaries in the same directory as the main benchmark binary.
+    data: [
+        ":bench_noop",
+        ":bench_noop_nostl",
+        ":bench_noop_static",
+    ],
+
+    host_supported: true,
+    target: {
+        darwin: { enabled: false },
+        windows: { enabled: false },
+    },
+}
+
+cc_defaults {
+    name: "noop_binary_defaults",
+
+    compile_multilib: "both",
+    multilib: {
+        lib32: { suffix: "32" },
+        lib64: { suffix: "64" },
+    },
+
+    host_supported: true,
+    target: {
+        darwin: { enabled: false },
+        windows: { enabled: false },
+    },
+}
+
+cc_binary {
+    defaults: ["noop_binary_defaults"],
+    name: "bench_noop",
+    srcs: ["noop.cpp"],
+
+    // When this binary is installed to host/linux-x86/bin, its runpath is ${ORIGIN}/../lib[64],
+    // which is fine for finding host/linux-x86/lib[64]/libc++.so. When it's installed to
+    // host/linux-x86/benchmarktest[64]/bionic-spawn-benchmarks, the runpath needs an extra "..".
+    target: {
+        linux_glibc_x86: {
+            ldflags: [
+                "-Wl,--rpath,${ORIGIN}/../../lib",
+            ],
+        },
+        linux_glibc_x86_64: {
+            ldflags: [
+                "-Wl,--rpath,${ORIGIN}/../../lib64",
+            ],
+        },
+    }
+}
+
+cc_binary {
+    defaults: ["noop_binary_defaults"],
+    name: "bench_noop_nostl",
+    srcs: ["noop.cpp"],
+    stl: "none",
+}
+
+cc_binary {
+    defaults: ["noop_binary_defaults"],
+    name: "bench_noop_static",
+    srcs: ["noop.cpp"],
+    static_executable: true,
+    stl: "libc++_static",
+}
diff --git a/benchmarks/spawn/AndroidTest.xml b/benchmarks/spawn/AndroidTest.xml
new file mode 100644
index 0000000..9331675
--- /dev/null
+++ b/benchmarks/spawn/AndroidTest.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+     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.
+
+     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.
+-->
+<configuration description="Runs bionic-spawn-benchmarks.">
+    <option name="test-suite-tag" value="apct" />
+
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push" value="bionic-spawn-benchmarks->/data/local/tmp/bionic-spawn-benchmarks" />
+    </target_preparer>
+
+    <!-- TODO(b/120549168): This seems necessary for consistent results on a walleye, but it's not working with atest
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="push" value="perf-setup.sh->/data/local/tmp/perf-setup.sh" />
+        <option name="post-push" value="chmod 755 /data/local/tmp/perf-setup.sh;/data/local/tmp/perf-setup.sh" />
+    </target_preparer>
+    -->
+
+    <test class="com.android.tradefed.testtype.GoogleBenchmarkTest" >
+        <option name="native-benchmark-device-path" value="/data/local/tmp" />
+        <option name="benchmark-module-name" value="bionic-spawn-benchmarks" />
+
+        <!-- The GoogleBenchmarkTest class ordinarily expects every file in the benchmark's
+             directory (recursively) to be a google-benchmark binary, so we need this setting to
+             avoid failing on the bench_* noop programs, which don't output benchmark results. -->
+        <option name="file-exclusion-filter-regex" value=".*/bench_[^/]*$"  />
+    </test>
+
+</configuration>
diff --git a/benchmarks/spawn/noop.cpp b/benchmarks/spawn/noop.cpp
new file mode 100644
index 0000000..1f1cac0
--- /dev/null
+++ b/benchmarks/spawn/noop.cpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * 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.
+ *
+ * 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.
+ */
+
+int main() {
+  return 0;
+}
diff --git a/benchmarks/spawn/spawn_benchmarks.cpp b/benchmarks/spawn/spawn_benchmarks.cpp
new file mode 100644
index 0000000..e8f7c17
--- /dev/null
+++ b/benchmarks/spawn/spawn_benchmarks.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * 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.
+ *
+ * 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.
+ */
+
+#include <errno.h>
+#include <spawn.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/stringprintf.h>
+#include <benchmark/benchmark.h>
+
+static std::string test_program(const char* name) {
+#if defined(__LP64__)
+  return android::base::GetExecutableDirectory() + "/" + name + "64";
+#else
+  return android::base::GetExecutableDirectory() + "/" + name + "32";
+#endif
+}
+
+extern char** environ;
+
+static void BM_spawn_test(benchmark::State& state, const char* const* argv) {
+  for (auto _ : state) {
+    pid_t child = 0;
+    if (int spawn_err = posix_spawn(&child, argv[0], nullptr, nullptr, const_cast<char**>(argv),
+                                    environ)) {
+      state.SkipWithError(android::base::StringPrintf(
+          "posix_spawn of %s failed: %s", argv[0], strerror(spawn_err)).c_str());
+      break;
+    }
+
+    int wstatus = 0;
+    const pid_t wait_result = TEMP_FAILURE_RETRY(waitpid(child, &wstatus, 0));
+    if (wait_result != child) {
+      state.SkipWithError(android::base::StringPrintf(
+          "waitpid on pid %d for %s failed: %s",
+          static_cast<int>(child), argv[0], strerror(errno)).c_str());
+      break;
+    }
+    if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 127) {
+      state.SkipWithError(android::base::StringPrintf("could not exec %s", argv[0]).c_str());
+      break;
+    }
+  }
+}
+
+#define SPAWN_BENCHMARK(name, ...)                                                    \
+    BENCHMARK_CAPTURE(BM_spawn_test, name, (const char*[]) { __VA_ARGS__, nullptr })  \
+        ->UseRealTime()                                                               \
+        ->Unit(benchmark::kMicrosecond)                                               \
+
+SPAWN_BENCHMARK(noop, test_program("bench_noop").c_str());
+SPAWN_BENCHMARK(noop_nostl, test_program("bench_noop_nostl").c_str());
+SPAWN_BENCHMARK(noop_static, test_program("bench_noop_static").c_str());
+
+// Android has a /bin -> /system/bin symlink, but use /system/bin explicitly so we can more easily
+// compare Bionic-vs-glibc on a Linux desktop machine.
+#if defined(__GLIBC__)
+
+SPAWN_BENCHMARK(bin_true, "/bin/true");
+SPAWN_BENCHMARK(sh_true, "/bin/sh", "-c", "true");
+
+#elif defined(__ANDROID__)
+
+SPAWN_BENCHMARK(system_bin_true, "/system/bin/true");
+SPAWN_BENCHMARK(vendor_bin_true, "/vendor/bin/true");
+SPAWN_BENCHMARK(system_sh_true, "/system/bin/sh", "-c", "true");
+SPAWN_BENCHMARK(vendor_sh_true, "/vendor/bin/sh", "-c", "true");
+
+#endif
+
+BENCHMARK_MAIN();