diff --git a/hphp/test/ext/test_ext.h b/hphp/test/ext/test_ext.h
index 7df25cadf..0eb76077c 100644
--- a/hphp/test/ext/test_ext.h
+++ b/hphp/test/ext/test_ext.h
@@ -36,7 +36,6 @@
 #include "hphp/facebook/extensions/urlextraction/test_ext_urlextraction.h"
 #include "hphp/test/ext/test_ext_curl.h"
 #include "hphp/test/ext/test_ext_imagesprite.h"
-#include "hphp/test/ext/test_ext_ipc.h"
 #include "hphp/test/ext/test_ext_mailparse.h"
 #include "hphp/test/ext/test_ext_math.h"
 #include "hphp/test/ext/test_ext_mb.h"
diff --git a/hphp/test/ext/test_ext_ipc.cpp b/hphp/test/ext/test_ext_ipc.cpp
deleted file mode 100644
index c34f4ff47..000000000
--- a/hphp/test/ext/test_ext_ipc.cpp
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
-   +----------------------------------------------------------------------+
-   | HipHop for PHP                                                       |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.01 of the PHP license,      |
-   | that is bundled with this package in the file LICENSE, and is        |
-   | available through the world-wide-web at the following url:           |
-   | http://www.php.net/license/3_01.txt                                  |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-*/
-
-#include "hphp/test/ext/test_ext_ipc.h"
-#include "hphp/runtime/ext/ext_ipc.h"
-#include <sys/wait.h>
-
-///////////////////////////////////////////////////////////////////////////////
-
-bool TestExtIpc::RunTests(const std::string &which) {
-  bool ret = true;
-
-  /*
-  RUN_TEST(test_ftok);
-  RUN_TEST(test_msg_get_queue);
-  RUN_TEST(test_msg_send);
-  RUN_TEST(test_msg_receive);
-  RUN_TEST(test_msg_remove_queue);
-  RUN_TEST(test_msg_set_queue);
-  RUN_TEST(test_msg_stat_queue);
-  RUN_TEST(test_sem_acquire);
-  RUN_TEST(test_sem_get);
-  RUN_TEST(test_sem_release);
-  RUN_TEST(test_sem_remove);
-  RUN_TEST(test_shm_attach);
-  RUN_TEST(test_shm_detach);
-  RUN_TEST(test_shm_remove);
-  RUN_TEST(test_shm_get_var);
-  RUN_TEST(test_shm_put_var);
-  RUN_TEST(test_shm_remove_var);
-  */
-  RUN_TEST(test_message_queue);
-  RUN_TEST(test_semaphore);
-  RUN_TEST(test_shared_memory);
-
-  return ret;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-bool TestExtIpc::test_message_queue() {
-  static const StaticString s_msg_qnum("msg_qnum");
-  char filename[64];
-  strcpy(filename, "/tmp/XXXXXX");
-  close(mkstemp(filename));
-
-  int64_t token = f_ftok(filename, "a");
-  VERIFY(!f_msg_queue_exists(token));
-  Object queue = f_msg_get_queue(token);
-  VERIFY(queue.get());
-  VERIFY(f_msg_queue_exists(token));
-
-  int pid = fork();
-  if (pid == 0) {
-    Object q = f_msg_get_queue(token);
-    always_assert(q.get());
-    always_assert(f_msg_send(q, 2, "start"));
-    Variant type, msg;
-    always_assert(f_msg_receive(q, 1, ref(type), 100, ref(msg)));
-    always_assert(f_msg_send(q, 2, msg)); // echo
-    _exit(-1);
-  }
-
-  Variant type, msg;
-  VERIFY(f_msg_receive(queue, 2, ref(type), 100, ref(msg)));
-  VERIFY(same(msg, "start"));
-
-  VERIFY(f_msg_send(queue, 1, "ok"));
-  VERIFY(f_msg_receive(queue, 2, ref(type), 100, ref(msg)));
-  VERIFY(same(msg, "ok"));
-
-  Array ret = f_msg_stat_queue(queue);
-  VS(ret[s_msg_qnum], 0);
-  f_msg_set_queue(queue, CREATE_MAP1("msg_perm.mode", 0666));
-
-  f_msg_remove_queue(queue);
-  int status = -1;
-  wait(&status);
-  return Count(true);
-}
-
-bool TestExtIpc::test_ftok()             { return test_message_queue();}
-bool TestExtIpc::test_msg_get_queue()    { return test_message_queue();}
-bool TestExtIpc::test_msg_send()         { return test_message_queue();}
-bool TestExtIpc::test_msg_receive ()     { return test_message_queue();}
-bool TestExtIpc::test_msg_remove_queue() { return test_message_queue();}
-bool TestExtIpc::test_msg_set_queue()    { return test_message_queue();}
-bool TestExtIpc::test_msg_stat_queue()   { return test_message_queue();}
-
-///////////////////////////////////////////////////////////////////////////////
-
-bool TestExtIpc::test_semaphore() {
-  Variant ret = f_sem_get(0xDEADBEEF);
-  VERIFY(!same(ret, false));
-  Object sem = ret.toObject();
-  time_t now = time(0);
-  VERIFY(f_sem_acquire(sem));
-
-  int pid = fork();
-  if (pid == 0) {
-    Variant ret = f_sem_get(0xDEADBEEF);
-    always_assert(!same(ret, false));
-    Object sem = ret.toObject();
-
-    always_assert(f_sem_acquire(sem));
-
-    // This isn't a sure test, but may be false if f_sem_acquire() didn't work
-    time_t then = time(0);
-    always_assert(then - now > 1);
-    (void)then;
-    (void)now;
-
-    always_assert(f_sem_release(sem));
-    VERIFY(f_sem_remove(sem));
-    _exit(-1);
-  }
-
-  sleep(3); // aha
-  VERIFY(f_sem_release(sem));
-  int status = -1;
-  wait(&status);
-  return Count(true);
-}
-
-bool TestExtIpc::test_sem_acquire() { return test_semaphore();}
-bool TestExtIpc::test_sem_get()     { return test_semaphore();}
-bool TestExtIpc::test_sem_release() { return test_semaphore();}
-bool TestExtIpc::test_sem_remove()  { return test_semaphore();}
-
-///////////////////////////////////////////////////////////////////////////////
-
-bool TestExtIpc::test_shared_memory() {
-  Variant ret = f_shm_attach(0xDEADBEEF);
-  VERIFY(!same(ret, false));
-  int64_t index = ret.toInt64();
-  VERIFY(!f_shm_has_var(index, 1234));
-  VERIFY(f_shm_put_var(index, 1234, "test"));
-  VERIFY(f_shm_has_var(index, 1234));
-
-  int pid = fork();
-  if (pid == 0) {
-    Variant ret = f_shm_attach(index);
-    always_assert(!same(ret, false));
-    Object mem = ret.toObject();
-
-    ret = f_shm_get_var(index, 1234);
-    always_assert(same(ret, "test"));
-
-    always_assert(f_shm_remove_var(index, 1234));
-    always_assert(f_shm_detach(index));
-    _exit(-1);
-  }
-
-  // Verifying f_shm_remove_var worked, this is not sure test though.
-  ret = f_shm_get_var(index, 1234);
-  for (int i = 0; i < 1000; i++) {
-    if (same(ret, false)) break;
-    usleep(1000);
-    ret = f_shm_get_var(index, 1234);
-  }
-  VERIFY(same(ret, false));
-
-  VERIFY(f_shm_remove(index));
-  int status = -1;
-  wait(&status);
-  return Count(true);
-}
-
-bool TestExtIpc::test_shm_attach()     { return test_shared_memory();}
-bool TestExtIpc::test_shm_detach()     { return test_shared_memory();}
-bool TestExtIpc::test_shm_remove()     { return test_shared_memory();}
-bool TestExtIpc::test_shm_get_var()    { return test_shared_memory();}
-bool TestExtIpc::test_shm_put_var()    { return test_shared_memory();}
-bool TestExtIpc::test_shm_remove_var() { return test_shared_memory();}
diff --git a/hphp/test/ext/test_ext_ipc.h b/hphp/test/ext/test_ext_ipc.h
deleted file mode 100644
index e9b126d3c..000000000
--- a/hphp/test/ext/test_ext_ipc.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
-   +----------------------------------------------------------------------+
-   | HipHop for PHP                                                       |
-   +----------------------------------------------------------------------+
-   | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
-   +----------------------------------------------------------------------+
-   | This source file is subject to version 3.01 of the PHP license,      |
-   | that is bundled with this package in the file LICENSE, and is        |
-   | available through the world-wide-web at the following url:           |
-   | http://www.php.net/license/3_01.txt                                  |
-   | If you did not receive a copy of the PHP license and are unable to   |
-   | obtain it through the world-wide-web, please send a note to          |
-   | license@php.net so we can mail you a copy immediately.               |
-   +----------------------------------------------------------------------+
-*/
-
-#ifndef incl_HPHP_TEST_EXT_IPC_H_
-#define incl_HPHP_TEST_EXT_IPC_H_
-
-// >>>>>> Generated by idl.php. Do NOT modify. <<<<<<
-
-#include "hphp/test/ext/test_cpp_ext.h"
-
-///////////////////////////////////////////////////////////////////////////////
-
-class TestExtIpc : public TestCppExt {
-public:
-  virtual bool RunTests(const std::string &which);
-
-  bool test_ftok();
-  bool test_msg_get_queue();
-  bool test_msg_send();
-  bool test_msg_receive();
-  bool test_msg_remove_queue();
-  bool test_msg_set_queue();
-  bool test_msg_stat_queue();
-  bool test_sem_acquire();
-  bool test_sem_get();
-  bool test_sem_release();
-  bool test_sem_remove();
-  bool test_shm_attach();
-  bool test_shm_detach();
-  bool test_shm_remove();
-  bool test_shm_get_var();
-  bool test_shm_put_var();
-  bool test_shm_remove_var();
-
-  bool test_message_queue();
-  bool test_semaphore();
-  bool test_shared_memory();
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-#endif // incl_HPHP_TEST_EXT_IPC_H_
diff --git a/hphp/test/slow/ext_ipc/message_queue.php b/hphp/test/slow/ext_ipc/message_queue.php
new file mode 100644
index 000000000..e6616e787
--- /dev/null
+++ b/hphp/test/slow/ext_ipc/message_queue.php
@@ -0,0 +1,35 @@
+<?php
+
+$s_msg_qnum = "msg_qnum";
+$filename = tempnam('/tmp', 'vmmsgqueue');
+
+$token = ftok($filename, "a");
+if (msg_queue_exists($token)) { echo "queue exists\n"; exit(1); }
+
+$queue = msg_get_queue($token);
+var_dump(msg_queue_exists($token));
+
+$pid = pcntl_fork();
+if ($pid == 0) {
+  $q = msg_get_queue($token);
+  msg_send($q, 2, "start");
+  msg_receive($q, 1, $type, 100, $msg);
+  msg_send($q, 2, $msg); // echo
+  exit(0);
+}
+
+msg_receive($queue, 2, $type, 100, $msg);
+var_dump($msg);
+
+msg_send($queue, 1, "ok");
+msg_receive($queue, 2, $type, 100, $msg);
+var_dump($msg);
+
+$ret = msg_stat_queue($queue);
+var_dump($ret[$s_msg_qnum]);
+msg_set_queue($queue, array("msg_perm.mode" => 0666));
+
+msg_remove_queue($queue);
+pcntl_waitpid($pid, $status);
+
+unlink($filename);
diff --git a/hphp/test/slow/ext_ipc/message_queue.php.expect b/hphp/test/slow/ext_ipc/message_queue.php.expect
new file mode 100644
index 000000000..d13002500
--- /dev/null
+++ b/hphp/test/slow/ext_ipc/message_queue.php.expect
@@ -0,0 +1,4 @@
+bool(true)
+string(5) "start"
+string(2) "ok"
+int(0)
diff --git a/hphp/test/slow/ext_ipc/semaphore.php b/hphp/test/slow/ext_ipc/semaphore.php
new file mode 100644
index 000000000..4265812c1
--- /dev/null
+++ b/hphp/test/slow/ext_ipc/semaphore.php
@@ -0,0 +1,29 @@
+<?php
+
+$ret = sem_get(0xDEADBEEF);
+if ($ret === false) { echo "failed\n"; exit(1); }
+$sem = $ret;
+$now = microtime(true);
+var_dump(sem_acquire($sem));
+
+$pid = pcntl_fork();
+if ($pid == 0) {
+  $sem = sem_get(0xDEADBEEF);
+  if (sem_acquire($sem) !== true) {
+    echo "oops1\n";
+  }
+
+  // This isn't a sure test, but may be false if sem_acquire() didn't work
+  $then = microtime(true);
+  if (!($then - $now > 1)) {
+    echo "oops: $then $now\n";
+  }
+
+  sem_release($sem);
+  sem_remove($sem);
+  exit(0);
+}
+
+sleep(3); // aha
+sem_release($sem);
+pcntl_waitpid($pid, $status);
diff --git a/hphp/test/slow/ext_ipc/semaphore.php.expect b/hphp/test/slow/ext_ipc/semaphore.php.expect
new file mode 100644
index 000000000..ea5b1fdc3
--- /dev/null
+++ b/hphp/test/slow/ext_ipc/semaphore.php.expect
@@ -0,0 +1 @@
+bool(true)
diff --git a/hphp/test/slow/ext_ipc/shared_memory.php b/hphp/test/slow/ext_ipc/shared_memory.php
new file mode 100644
index 000000000..cb0ede533
--- /dev/null
+++ b/hphp/test/slow/ext_ipc/shared_memory.php
@@ -0,0 +1,35 @@
+<?php
+
+$ret = shm_attach(0xDEADBEEF);
+if ($ret === false) { echo "failed\n"; exit(1); }
+$index = $ret;
+var_dump(shm_has_var($index, 1234));
+shm_put_var($index, 1234, "test");
+var_dump(shm_has_var($index, 1234));
+
+$pid = pcntl_fork();
+if ($pid == 0) {
+  $ret = shm_attach($index);
+  $ret = shm_get_var($index, 1234);
+  if ($ret !== "test") {
+    echo "oops\n";
+    exit(1);
+  }
+  shm_remove_var($index, 1234);
+  shm_detach($index);
+  exit(0);
+}
+
+// Verifying shm_remove_var worked, this is not sure test though.
+$ret = shm_get_var($index, 1234);
+for ($i = 0; $i < 1000; $i++) {
+  if ($ret === false) break;
+  usleep(1000);
+  $ret = shm_get_var($index, 1234);
+}
+var_dump($ret === false);
+
+shm_remove($index);
+
+pcntl_waitpid($pid, $status);
+
diff --git a/hphp/test/slow/ext_ipc/shared_memory.php.expect b/hphp/test/slow/ext_ipc/shared_memory.php.expect
new file mode 100644
index 000000000..04a793059
--- /dev/null
+++ b/hphp/test/slow/ext_ipc/shared_memory.php.expect
@@ -0,0 +1,3 @@
+bool(false)
+bool(true)
+bool(true)