diff --git a/cmake/external_libs/libevent.cmake b/cmake/external_libs/libevent.cmake
index cc4067ef644..b780b1f9664 100644
--- a/cmake/external_libs/libevent.cmake
+++ b/cmake/external_libs/libevent.cmake
@@ -11,7 +11,7 @@ endif ()
 
 mindspore_add_pkg(libevent
         VER 2.1.12
-        LIBS event event_pthreads
+        LIBS event event_pthreads event_core
         URL ${REQ_URL}
         MD5 ${MD5}
         CMAKE_OPTION -DCMAKE_BUILD_TYPE:STRING=Release -DBUILD_TESTING=OFF)
@@ -20,3 +20,4 @@ include_directories(${libevent_INC})
 
 add_library(mindspore::event ALIAS libevent::event)
 add_library(mindspore::event_pthreads ALIAS libevent::event_pthreads)
+add_library(mindspore::event_core ALIAS libevent::event_core)
diff --git a/cmake/package.cmake b/cmake/package.cmake
index 5da32b81e17..d818f01a573 100644
--- a/cmake/package.cmake
+++ b/cmake/package.cmake
@@ -80,8 +80,8 @@ if (USE_GLOG)
 endif ()
 
 file(GLOB_RECURSE LIBEVENT_LIB_LIST
-        ${libevent_LIBPATH}/libevent*
-        ${libevent_LIBPATH}/libevent_pthreads*
+        ${libevent_LIBPATH}/libevent*${CMAKE_SHARED_LIBRARY_SUFFIX}*
+        ${libevent_LIBPATH}/libevent_pthreads*${CMAKE_SHARED_LIBRARY_SUFFIX}*
         )
 
 install(
@@ -89,6 +89,7 @@ install(
         DESTINATION ${INSTALL_LIB_DIR}
         COMPONENT mindspore
 )
+
 if (ENABLE_MINDDATA)
     install(
         TARGETS _c_dataengine _c_mindrecord
diff --git a/mindspore/ccsrc/CMakeLists.txt b/mindspore/ccsrc/CMakeLists.txt
index 66996e97fd2..a370daa3ad1 100644
--- a/mindspore/ccsrc/CMakeLists.txt
+++ b/mindspore/ccsrc/CMakeLists.txt
@@ -304,6 +304,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "Windows")
 else ()
     if (ENABLE_CPU AND (ENABLE_D OR ENABLE_GPU))
         target_link_libraries(mindspore mindspore::pslite proto_input mindspore::protobuf mindspore::event mindspore::event_pthreads ${zeromq_DIRPATH}/zmq_install/lib/libzmq.a)
+        target_link_libraries(mindspore -Wl,--no-as-needed mindspore::event_core)
         if (${ENABLE_IBVERBS} STREQUAL "ON")
             target_link_libraries(mindspore ibverbs rdmacm)
         endif()
diff --git a/mindspore/ccsrc/ps/core/cluster_config.h b/mindspore/ccsrc/ps/core/cluster_config.h
index 8a8ace7fb40..ea7bd68b355 100644
--- a/mindspore/ccsrc/ps/core/cluster_config.h
+++ b/mindspore/ccsrc/ps/core/cluster_config.h
@@ -28,7 +28,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 constexpr uint32_t kHeartbeatInterval = 3;
 
 class ClusterConfig {
diff --git a/mindspore/ccsrc/ps/core/comm_util.cc b/mindspore/ccsrc/ps/core/comm_util.cc
index 9d5be87ee0a..71bc9d0d599 100644
--- a/mindspore/ccsrc/ps/core/comm_util.cc
+++ b/mindspore/ccsrc/ps/core/comm_util.cc
@@ -26,7 +26,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 bool CommUtil::CheckIpWithRegex(const std::string &ip) {
   std::regex pattern("((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)");
   std::smatch res;
@@ -76,7 +75,6 @@ void CommUtil::GetAvailableInterfaceAndIP(std::string *interface, std::string *i
   MS_EXCEPTION_IF_NULL(if_address);
   freeifaddrs(if_address);
 }
-
 }  // namespace core
 }  // namespace ps
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/ps/core/comm_util.h b/mindspore/ccsrc/ps/core/comm_util.h
index 3200a624159..651ba1c3e8f 100644
--- a/mindspore/ccsrc/ps/core/comm_util.h
+++ b/mindspore/ccsrc/ps/core/comm_util.h
@@ -49,7 +49,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 class CommUtil {
  public:
   static bool CheckIpWithRegex(const std::string &ip);
diff --git a/mindspore/ccsrc/ps/core/http_message_handler.cc b/mindspore/ccsrc/ps/core/http_message_handler.cc
index c7f6c008adb..a3b3351c917 100644
--- a/mindspore/ccsrc/ps/core/http_message_handler.cc
+++ b/mindspore/ccsrc/ps/core/http_message_handler.cc
@@ -37,7 +37,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 void HttpMessageHandler::InitHttpMessage() {
   MS_EXCEPTION_IF_NULL(event_request_);
   event_uri_ = evhttp_request_get_evhttp_uri(event_request_);
@@ -176,10 +175,13 @@ void HttpMessageHandler::SendResponse() {
   evhttp_send_reply(event_request_, resp_code_, nullptr, resp_buf_);
 }
 
-void HttpMessageHandler::QuickResponse(int code, const std::string &body) {
+void HttpMessageHandler::QuickResponse(int code, const unsigned char *body, size_t len) {
   MS_EXCEPTION_IF_NULL(event_request_);
+  MS_EXCEPTION_IF_NULL(body);
   MS_EXCEPTION_IF_NULL(resp_buf_);
-  AddRespString(body);
+  if (evbuffer_add(resp_buf_, body, len) == -1) {
+    MS_LOG(EXCEPTION) << "Add body to response body failed.";
+  }
   evhttp_send_reply(event_request_, code, nullptr, resp_buf_);
 }
 
diff --git a/mindspore/ccsrc/ps/core/http_message_handler.h b/mindspore/ccsrc/ps/core/http_message_handler.h
index f5c7a0e619f..3b7e571e7d8 100644
--- a/mindspore/ccsrc/ps/core/http_message_handler.h
+++ b/mindspore/ccsrc/ps/core/http_message_handler.h
@@ -37,7 +37,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 using HttpHeaders = std::map<std::string, std::list<std::string>>;
 
 class HttpMessageHandler {
@@ -79,7 +78,7 @@ class HttpMessageHandler {
 
   // Make sure code and all response body has finished set
   void SendResponse();
-  void QuickResponse(int code, const std::string &body);
+  void QuickResponse(int code, const unsigned char *body, size_t len);
   void SimpleResponse(int code, const HttpHeaders &headers, const std::string &body);
 
   // If message is empty, libevent will use default error code message instead
@@ -100,7 +99,6 @@ class HttpMessageHandler {
   // Body length should no more than MAX_POST_BODY_LEN, default 64kB
   void ParsePostParam();
 };
-
 }  // namespace core
 }  // namespace ps
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/ps/core/http_server.cc b/mindspore/ccsrc/ps/core/http_server.cc
index 44af4bb81fa..5ed0376f8f4 100644
--- a/mindspore/ccsrc/ps/core/http_server.cc
+++ b/mindspore/ccsrc/ps/core/http_server.cc
@@ -41,7 +41,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 HttpServer::~HttpServer() { Stop(); }
 
 bool HttpServer::InitServer() {
@@ -50,6 +49,10 @@ bool HttpServer::InitServer() {
   }
 
   is_stop_ = false;
+  int result = evthread_use_pthreads();
+  if (result != 0) {
+    MS_LOG(EXCEPTION) << "Use event pthread failed!";
+  }
   event_base_ = event_base_new();
   MS_EXCEPTION_IF_NULL(event_base_);
   event_http_ = evhttp_new(event_base_);
@@ -164,7 +167,6 @@ void HttpServer::Stop() {
     is_stop_ = true;
   }
 }
-
 }  // namespace core
 }  // namespace ps
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/ps/core/http_server.h b/mindspore/ccsrc/ps/core/http_server.h
index 69d2936800a..9d95f33faf8 100644
--- a/mindspore/ccsrc/ps/core/http_server.h
+++ b/mindspore/ccsrc/ps/core/http_server.h
@@ -25,6 +25,7 @@
 #include <event2/keyvalq_struct.h>
 #include <event2/listener.h>
 #include <event2/util.h>
+#include <event2/thread.h>
 
 #include <cstdio>
 #include <cstdlib>
@@ -37,7 +38,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 typedef enum eHttpMethod {
   HM_GET = 1 << 0,
   HM_POST = 1 << 1,
@@ -92,7 +92,6 @@ class HttpServer {
   bool is_init_;
   std::atomic<bool> is_stop_;
 };
-
 }  // namespace core
 }  // namespace ps
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/ps/core/tcp_client.cc b/mindspore/ccsrc/ps/core/tcp_client.cc
index ad8db6aed46..ece0f3c1d23 100644
--- a/mindspore/ccsrc/ps/core/tcp_client.cc
+++ b/mindspore/ccsrc/ps/core/tcp_client.cc
@@ -35,7 +35,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 TcpClient::TcpClient(const std::string &address, std::uint16_t port)
     : event_base_(nullptr),
       event_timeout_(nullptr),
@@ -254,7 +253,6 @@ void TcpClient::SendMessageWithTimer() {
   ev = evtimer_new(event_base_, SendHeartBeatCallback, this);
   evtimer_add(ev, &timeout);
 }
-
 }  // namespace core
 }  // namespace ps
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/ps/core/tcp_message_handler.h b/mindspore/ccsrc/ps/core/tcp_message_handler.h
index c13db9d703b..b77041e65e2 100644
--- a/mindspore/ccsrc/ps/core/tcp_message_handler.h
+++ b/mindspore/ccsrc/ps/core/tcp_message_handler.h
@@ -30,7 +30,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 using messageReceive = std::function<void(const CommMessage &message)>;
 
 class TcpMessageHandler {
diff --git a/mindspore/ccsrc/ps/core/tcp_server.cc b/mindspore/ccsrc/ps/core/tcp_server.cc
index 9093eec6272..004142b6bf5 100644
--- a/mindspore/ccsrc/ps/core/tcp_server.cc
+++ b/mindspore/ccsrc/ps/core/tcp_server.cc
@@ -32,7 +32,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 void TcpConnection::InitConnection() {
   tcp_message_handler_.SetCallback([&](const CommMessage &message) {
     OnServerReceiveMessage on_server_receive = server_->GetServerReceive();
@@ -301,7 +300,6 @@ void TcpServer::SendMessage(const CommMessage &message) {
 uint16_t TcpServer::BoundPort() const { return server_port_; }
 
 void TcpServer::SetMessageCallback(const OnServerReceiveMessage &cb) { message_callback_ = cb; }
-
 }  // namespace core
 }  // namespace ps
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/ps/core/tcp_server.h b/mindspore/ccsrc/ps/core/tcp_server.h
index ba554e29a2c..e74af03796d 100644
--- a/mindspore/ccsrc/ps/core/tcp_server.h
+++ b/mindspore/ccsrc/ps/core/tcp_server.h
@@ -36,7 +36,6 @@
 namespace mindspore {
 namespace ps {
 namespace core {
-
 class TcpServer;
 class TcpConnection {
  public:
@@ -106,7 +105,6 @@ class TcpServer {
   std::recursive_mutex connection_mutex_;
   OnServerReceiveMessage message_callback_;
 };
-
 }  // namespace core
 }  // namespace ps
 }  // namespace mindspore
diff --git a/tests/ut/cpp/ps/core/http_server_test.cc b/tests/ut/cpp/ps/core/http_server_test.cc
index bb0f9bede15..01445eabe48 100644
--- a/tests/ut/cpp/ps/core/http_server_test.cc
+++ b/tests/ut/cpp/ps/core/http_server_test.cc
@@ -75,7 +75,8 @@ class TestHttpServer : public UT::Common {
         EXPECT_STREQ(resp->GetUriQuery().c_str(), "key1=value1");
         EXPECT_STREQ(resp->GetRequestUri().c_str(), "/httpget?key1=value1");
         EXPECT_STREQ(resp->GetUriPath().c_str(), "/httpget");
-        resp->QuickResponse(200, "get request success!\n");
+        const unsigned char ret[] = "get request success!\n";
+        resp->QuickResponse(200, ret, 22);
       },
       std::placeholders::_1);