diff --git a/proxy/src/message_client/ClientV2.cpp b/proxy/src/message_client/ClientV2.cpp
index fba3d35263..27ce7c37cf 100644
--- a/proxy/src/message_client/ClientV2.cpp
+++ b/proxy/src/message_client/ClientV2.cpp
@@ -8,6 +8,7 @@
 #include <numeric>
 #include <algorithm>
 #include <unistd.h>
+#include "nlohmann/json.hpp"
 #include "log/Log.h"
 
 namespace milvus::message_client {
@@ -222,6 +223,14 @@ Status MsgClientV2::SendMutMessage(const milvus::grpc::InsertParam &request,
 //    auto r = getcwd(buff, 128);
     auto path = std::string("/tmp");
     std::ofstream file(path + "/proxy2pulsar.benchmark", std::fstream::app);
+    nlohmann::json json;
+    json["InsertTime"] = milvus::CommonUtil::TimeToString(start);
+    json["DurationInMilliseconds"] = std::chrono::duration_cast<std::chrono::milliseconds>(time_cost).count();
+    json["SizeInMB"] =  size_inserted / 1024.0 / 1024.0;
+    json["ThroughputInMB"] = double(size_inserted) / std::chrono::duration_cast<std::chrono::milliseconds>(time_cost).count() * 1000 / 1024.0 / 1024;
+    json["NumRecords"] = num_inserted;
+    file << json.dump() << std::endl;
+    /*
     file << "[" << milvus::CommonUtil::TimeToString(start) << "]"
         << " Insert " << num_inserted << " records, "
          << "size:" << size_inserted / 1024.0 / 1024.0 << "M, "
@@ -230,6 +239,7 @@ Status MsgClientV2::SendMutMessage(const milvus::grpc::InsertParam &request,
          << double(size_inserted) / std::chrono::duration_cast<std::chrono::milliseconds>(time_cost).count() * 1000 / 1024.0
              / 1024
          << "M/s" << std::endl;
+         */
     time_cost = stdclock::duration(0);
     num_inserted = 0;
     size_inserted = 0;
diff --git a/proxy/src/server/delivery/request/InsertReq.cpp b/proxy/src/server/delivery/request/InsertReq.cpp
index fb15e6e8d8..146539467c 100644
--- a/proxy/src/server/delivery/request/InsertReq.cpp
+++ b/proxy/src/server/delivery/request/InsertReq.cpp
@@ -25,6 +25,7 @@
 #include <vector>
 #include <unistd.h>
 #include "utils/CommonUtil.h"
+#include "nlohmann/json.hpp"
 
 #ifdef ENABLE_CPU_PROFILING
 #include <gperftools/profiler.h>
@@ -95,14 +96,21 @@ InsertReq::OnExecute() {
     ready_log_records += inserted_count;
     auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count() / 1000.0;
     if (duration > interval) {
-      log << "[" << milvus::CommonUtil::TimeToString(start) << "] "
-          << "Insert "
-          << inserted_count << " records, "
-          << "size: " << inserted_size / MB << "MB, "
-          << "cost: " << duration << "s, "
-          << "throughput: "
-          << double(inserted_size) / duration / MB
-          << "M/s\n";
+      nlohmann::json json;
+      json["InsertTime"] = milvus::CommonUtil::TimeToString(start);
+      json["DurationInMilliseconds"] = duration * 1000;
+      json["SizeInMB"] =  inserted_size / MB;
+      json["ThroughputInMB"] = double(inserted_size) / duration / MB;
+      json["NumRecords"] = inserted_count;
+      file << json.dump() << std::endl;
+//      log << "[" << milvus::CommonUtil::TimeToString(start) << "] "
+//          << "Insert "
+//          << inserted_count << " records, "
+//          << "size: " << inserted_size / MB << "MB, "
+//          << "cost: " << duration << "s, "
+//          << "throughput: "
+//          << double(inserted_size) / duration / MB
+//          << "M/s\n";
       auto new_flag = ready_log_records / per_log_records;
       if (new_flag != log_flag) {
         log_flag = new_flag;