diff --git a/internal/core/bench/CMakeLists.txt b/internal/core/bench/CMakeLists.txt
index 8b1b0a13e6e92419cb8fb4df7e8618c4cd7e4fbd..23f38ab5b4e997103dfec05bb1ad5137b09f2d28 100644
--- a/internal/core/bench/CMakeLists.txt
+++ b/internal/core/bench/CMakeLists.txt
@@ -7,6 +7,10 @@ set(bench_srcs
     bench_search.cpp
 )
 
+set(indexbuilder_bench_srcs
+        bench_indexbuilder.cpp
+)
+
 add_executable(all_bench ${bench_srcs})
 target_link_libraries(all_bench
         milvus_segcore
@@ -16,3 +20,13 @@ target_link_libraries(all_bench
         )
 
 target_link_libraries(all_bench benchmark::benchmark_main)
+
+add_executable(indexbuilder_bench ${indexbuilder_bench_srcs})
+target_link_libraries(indexbuilder_bench
+        milvus_segcore
+        milvus_indexbuilder
+        log
+        pthread
+        )
+
+target_link_libraries(indexbuilder_bench benchmark::benchmark_main)
diff --git a/internal/core/bench/bench_indexbuilder.cpp b/internal/core/bench/bench_indexbuilder.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f9731e51c5879646ef093fe2545fa1ab65bb5089
--- /dev/null
+++ b/internal/core/bench/bench_indexbuilder.cpp
@@ -0,0 +1,107 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License
+
+#include <benchmark/benchmark.h>
+#include <tuple>
+#include <map>
+#include <google/protobuf/text_format.h>
+
+#include "pb/index_cgo_msg.pb.h"
+#include "index/knowhere/knowhere/index/vector_index/helpers/IndexParameter.h"
+#include "index/knowhere/knowhere/index/vector_index/adapter/VectorAdapter.h"
+#include "indexbuilder/IndexWrapper.h"
+#include "indexbuilder/index_c.h"
+#include "indexbuilder/utils.h"
+#include "test_utils/indexbuilder_test_utils.h"
+
+constexpr int64_t NB = 1000000;
+
+namespace indexcgo = milvus::proto::indexcgo;
+
+auto index_type_collections = [] {
+    static std::map<int, milvus::knowhere::IndexType> collections{
+        {0, milvus::knowhere::IndexEnum::INDEX_FAISS_IVFFLAT},
+    };
+    return collections;
+}();
+
+auto metric_type_collections = [] {
+    static std::map<int, milvus::knowhere::MetricType> collections{
+        {0, milvus::knowhere::Metric::L2},
+    };
+    return collections;
+}();
+
+static void
+IndexBuilder_build(benchmark::State& state) {
+    auto index_type = index_type_collections.at(state.range(0));
+    auto metric_type = metric_type_collections.at(state.range(0));
+
+    indexcgo::TypeParams type_params;
+    indexcgo::IndexParams index_params;
+
+    std::tie(type_params, index_params) = generate_params(index_type, metric_type);
+
+    std::string type_params_str, index_params_str;
+    bool ok;
+    ok = google::protobuf::TextFormat::PrintToString(type_params, &type_params_str);
+    assert(ok);
+    ok = google::protobuf::TextFormat::PrintToString(index_params, &index_params_str);
+    assert(ok);
+
+    auto is_binary = state.range(2);
+    auto dataset = GenDataset(NB, metric_type, is_binary);
+    auto xb_data = dataset.get_col<float>(0);
+    auto xb_dataset = milvus::knowhere::GenDataset(NB, DIM, xb_data.data());
+
+    for (auto _ : state) {
+        auto index =
+                std::make_unique<milvus::indexbuilder::IndexWrapper>(type_params_str.c_str(), index_params_str.c_str());
+        index->BuildWithoutIds(xb_dataset);
+    }
+}
+
+static void
+IndexBuilder_build_and_codec(benchmark::State& state) {
+    auto index_type = index_type_collections.at(state.range(0));
+    auto metric_type = metric_type_collections.at(state.range(0));
+
+    indexcgo::TypeParams type_params;
+    indexcgo::IndexParams index_params;
+
+    std::tie(type_params, index_params) = generate_params(index_type, metric_type);
+
+    std::string type_params_str, index_params_str;
+    bool ok;
+    ok = google::protobuf::TextFormat::PrintToString(type_params, &type_params_str);
+    assert(ok);
+    ok = google::protobuf::TextFormat::PrintToString(index_params, &index_params_str);
+    assert(ok);
+
+    auto is_binary = state.range(2);
+    auto dataset = GenDataset(NB, metric_type, is_binary);
+    auto xb_data = dataset.get_col<float>(0);
+    auto xb_dataset = milvus::knowhere::GenDataset(NB, DIM, xb_data.data());
+
+    for (auto _ : state) {
+        auto index =
+                std::make_unique<milvus::indexbuilder::IndexWrapper>(type_params_str.c_str(), index_params_str.c_str());
+
+        index->BuildWithoutIds(xb_dataset);
+        index->Serialize();
+    }
+}
+
+// IVF_FLAT, L2, VectorFloat
+BENCHMARK(IndexBuilder_build)->Args({0, 0, false});
+
+// IVF_FLAT, L2, VectorFloat
+BENCHMARK(IndexBuilder_build_and_codec)->Args({0, 0, false});
diff --git a/internal/core/src/indexbuilder/IndexWrapper.cpp b/internal/core/src/indexbuilder/IndexWrapper.cpp
index 7c44c3f6e150053180e9e978d61d0cbc229625fb..b2f26532ec0615be7a2b2ef0dc2a211b4fca35fc 100644
--- a/internal/core/src/indexbuilder/IndexWrapper.cpp
+++ b/internal/core/src/indexbuilder/IndexWrapper.cpp
@@ -20,6 +20,7 @@
 #include "IndexWrapper.h"
 #include "indexbuilder/utils.h"
 #include "index/knowhere/knowhere/index/vector_index/ConfAdapterMgr.h"
+#include "index/knowhere/knowhere/common/Timer.h"
 
 namespace milvus {
 namespace indexbuilder {
@@ -169,6 +170,7 @@ IndexWrapper::BuildWithoutIds(const knowhere::DatasetPtr& dataset) {
     if (is_in_need_id_list(index_type)) {
         PanicInfo(std::string(index_type) + " doesn't support build without ids yet!");
     }
+    knowhere::TimeRecorder rc("BuildWithoutIds", 1);
     // if (is_in_need_build_all_list(index_type)) {
     //     index_->BuildAll(dataset, config_);
     // } else {
@@ -176,10 +178,13 @@ IndexWrapper::BuildWithoutIds(const knowhere::DatasetPtr& dataset) {
     //     index_->AddWithoutIds(dataset, config_);
     // }
     index_->BuildAll(dataset, config_);
+    rc.RecordSection("TrainAndAdd");
 
     if (is_in_nm_list(index_type)) {
         StoreRawData(dataset);
+        rc.RecordSection("StoreRawData");
     }
+    rc.ElapseFromBegin("Done");
 }
 
 void
diff --git a/internal/core/src/indexbuilder/IndexWrapper.h b/internal/core/src/indexbuilder/IndexWrapper.h
index 90e1486fef84a6c8e5d5ee1689514ee725a33d92..ad5227b108e59f1ba9b6c461a243e4d103dd9bf0 100644
--- a/internal/core/src/indexbuilder/IndexWrapper.h
+++ b/internal/core/src/indexbuilder/IndexWrapper.h
@@ -9,6 +9,7 @@
 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 // or implied. See the License for the specific language governing permissions and limitations under the License
 
+#pragma once
 #include <string>
 #include <optional>
 #include <vector>
diff --git a/internal/core/unittest/test_index_wrapper.cpp b/internal/core/unittest/test_index_wrapper.cpp
index 99daa7d419fde3b1789eaf3f8bfe1e03399efc66..988367407a8f15802b35ac59cb13aa67b620d8b1 100644
--- a/internal/core/unittest/test_index_wrapper.cpp
+++ b/internal/core/unittest/test_index_wrapper.cpp
@@ -11,7 +11,6 @@
 
 #include <tuple>
 #include <map>
-#include <limits>
 #include <math.h>
 #include <gtest/gtest.h>
 #include <google/protobuf/text_format.h>
@@ -22,314 +21,13 @@
 #include "indexbuilder/IndexWrapper.h"
 #include "indexbuilder/index_c.h"
 #include "test_utils/DataGen.h"
-#include "faiss/MetricType.h"
 #include "index/knowhere/knowhere/index/vector_index/VecIndexFactory.h"
 #include "indexbuilder/utils.h"
+#include "test_utils/indexbuilder_test_utils.h"
 
+constexpr int64_t NB = 100000;
 namespace indexcgo = milvus::proto::indexcgo;
 
-constexpr int64_t DIM = 8;
-constexpr int64_t NB = 10000;
-constexpr int64_t NQ = 10;
-constexpr int64_t K = 4;
-constexpr auto METRIC_TYPE = milvus::knowhere::Metric::L2;
-#ifdef MILVUS_GPU_VERSION
-int DEVICEID = 0;
-#endif
-
-namespace {
-auto
-generate_conf(const milvus::knowhere::IndexType& index_type, const milvus::knowhere::MetricType& metric_type) {
-    if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IDMAP) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IVFPQ) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::nlist, 100},
-            {milvus::knowhere::IndexParams::nprobe, 4},
-            {milvus::knowhere::IndexParams::m, 4},
-            {milvus::knowhere::IndexParams::nbits, 8},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IVFFLAT) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::nlist, 100},
-            {milvus::knowhere::IndexParams::nprobe, 4},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-#ifdef MILVUS_GPU_VERSION
-            {milvus::knowhere::meta::DEVICEID, DEVICEID},
-#endif
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IVFSQ8) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::nlist, 100},
-            {milvus::knowhere::IndexParams::nprobe, 4},
-            {milvus::knowhere::IndexParams::nbits, 8},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-#ifdef MILVUS_GPU_VERSION
-            {milvus::knowhere::meta::DEVICEID, DEVICEID},
-#endif
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_BIN_IVFFLAT) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::nlist, 100},
-            {milvus::knowhere::IndexParams::nprobe, 4},
-            {milvus::knowhere::IndexParams::m, 4},
-            {milvus::knowhere::IndexParams::nbits, 8},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_BIN_IDMAP) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_NSG) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::IndexParams::nlist, 163},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::nprobe, 8},
-            {milvus::knowhere::IndexParams::knng, 20},
-            {milvus::knowhere::IndexParams::search_length, 40},
-            {milvus::knowhere::IndexParams::out_degree, 30},
-            {milvus::knowhere::IndexParams::candidate, 100},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-        };
-#ifdef MILVUS_SUPPORT_SPTAG
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_SPTAG_KDT_RNT) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            // {milvus::knowhere::meta::TOPK, 10},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_SPTAG_BKT_RNT) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            // {milvus::knowhere::meta::TOPK, 10},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-#endif
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_HNSW) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},       {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::M, 16},   {milvus::knowhere::IndexParams::efConstruction, 200},
-            {milvus::knowhere::IndexParams::ef, 200}, {milvus::knowhere::Metric::TYPE, metric_type},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_ANNOY) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::n_trees, 4},
-            {milvus::knowhere::IndexParams::search_k, 100},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_RHNSWFlat) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::M, 16},
-            {milvus::knowhere::IndexParams::efConstruction, 200},
-            {milvus::knowhere::IndexParams::ef, 200},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_RHNSWPQ) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::M, 16},
-            {milvus::knowhere::IndexParams::efConstruction, 200},
-            {milvus::knowhere::IndexParams::ef, 200},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-            {milvus::knowhere::IndexParams::PQM, 8},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_RHNSWSQ) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::IndexParams::M, 16},
-            {milvus::knowhere::IndexParams::efConstruction, 200},
-            {milvus::knowhere::IndexParams::ef, 200},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_NGTPANNG) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::IndexParams::edge_size, 10},
-            {milvus::knowhere::IndexParams::epsilon, 0.1},
-            {milvus::knowhere::IndexParams::max_search_edges, 50},
-            {milvus::knowhere::IndexParams::forcedly_pruned_edge_size, 60},
-            {milvus::knowhere::IndexParams::selectively_pruned_edge_size, 30},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_NGTONNG) {
-        return milvus::knowhere::Config{
-            {milvus::knowhere::meta::DIM, DIM},
-            {milvus::knowhere::meta::TOPK, K},
-            {milvus::knowhere::Metric::TYPE, metric_type},
-            {milvus::knowhere::IndexParams::edge_size, 20},
-            {milvus::knowhere::IndexParams::epsilon, 0.1},
-            {milvus::knowhere::IndexParams::max_search_edges, 50},
-            {milvus::knowhere::IndexParams::outgoing_edge_size, 5},
-            {milvus::knowhere::IndexParams::incoming_edge_size, 40},
-            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
-        };
-    }
-    return milvus::knowhere::Config();
-}
-
-auto
-generate_params(const milvus::knowhere::IndexType& index_type, const milvus::knowhere::MetricType& metric_type) {
-    indexcgo::TypeParams type_params;
-    indexcgo::IndexParams index_params;
-
-    auto configs = generate_conf(index_type, metric_type);
-    for (auto& [key, value] : configs.items()) {
-        auto param = index_params.add_params();
-        auto value_str = value.is_string() ? value.get<std::string>() : value.dump();
-        param->set_key(key);
-        param->set_value(value_str);
-    }
-
-    auto param = index_params.add_params();
-    param->set_key("index_type");
-    param->set_value(std::string(index_type));
-
-    return std::make_tuple(type_params, index_params);
-}
-
-auto
-GenDataset(int64_t N, const milvus::knowhere::MetricType& metric_type, bool is_binary, int64_t dim = DIM) {
-    auto schema = std::make_shared<milvus::Schema>();
-    auto faiss_metric_type = milvus::knowhere::GetMetricType(metric_type);
-    if (!is_binary) {
-        schema->AddDebugField("fakevec", milvus::engine::DataType::VECTOR_FLOAT, dim, faiss_metric_type);
-        return milvus::segcore::DataGen(schema, N);
-    } else {
-        schema->AddDebugField("fakebinvec", milvus::engine::DataType::VECTOR_BINARY, dim, faiss_metric_type);
-        return milvus::segcore::DataGen(schema, N);
-    }
-}
-
-using QueryResultPtr = std::unique_ptr<milvus::indexbuilder::IndexWrapper::QueryResult>;
-void
-PrintQueryResult(const QueryResultPtr& result) {
-    auto nq = result->nq;
-    auto k = result->topk;
-
-    std::stringstream ss_id;
-    std::stringstream ss_dist;
-
-    for (auto i = 0; i < nq; i++) {
-        for (auto j = 0; j < k; ++j) {
-            ss_id << result->ids[i * k + j] << " ";
-            ss_dist << result->distances[i * k + j] << " ";
-        }
-        ss_id << std::endl;
-        ss_dist << std::endl;
-    }
-    std::cout << "id\n" << ss_id.str() << std::endl;
-    std::cout << "dist\n" << ss_dist.str() << std::endl;
-}
-
-float
-L2(const float* point_a, const float* point_b, int dim) {
-    float dis = 0;
-    for (auto i = 0; i < dim; i++) {
-        auto c_a = point_a[i];
-        auto c_b = point_b[i];
-        dis += pow(c_b - c_a, 2);
-    }
-    return dis;
-}
-
-int
-hamming_weight(uint8_t n) {
-    int count = 0;
-    while (n != 0) {
-        count += n & 1;
-        n >>= 1;
-    }
-    return count;
-}
-float
-Jaccard(const uint8_t* point_a, const uint8_t* point_b, int dim) {
-    float dis;
-    int len = dim / 8;
-    float intersection = 0;
-    float union_num = 0;
-    for (int i = 0; i < len; i++) {
-        intersection += hamming_weight(point_a[i] & point_b[i]);
-        union_num += hamming_weight(point_a[i] | point_b[i]);
-    }
-    dis = 1 - (intersection / union_num);
-    return dis;
-}
-
-float
-CountDistance(const void* point_a,
-              const void* point_b,
-              int dim,
-              const milvus::knowhere::MetricType& metric,
-              bool is_binary = false) {
-    if (point_a == nullptr || point_b == nullptr) {
-        return std::numeric_limits<float>::max();
-    }
-    if (metric == milvus::knowhere::Metric::L2) {
-        return L2(static_cast<const float*>(point_a), static_cast<const float*>(point_b), dim);
-    } else if (metric == milvus::knowhere::Metric::JACCARD) {
-        return Jaccard(static_cast<const uint8_t*>(point_a), static_cast<const uint8_t*>(point_b), dim);
-    } else {
-        return std::numeric_limits<float>::max();
-    }
-}
-
-void
-CheckDistances(const QueryResultPtr& result,
-               const milvus::knowhere::DatasetPtr& base_dataset,
-               const milvus::knowhere::DatasetPtr& query_dataset,
-               const milvus::knowhere::MetricType& metric,
-               const float threshold = 1.0e-5) {
-    auto base_vecs = base_dataset->Get<float*>(milvus::knowhere::meta::TENSOR);
-    auto query_vecs = query_dataset->Get<float*>(milvus::knowhere::meta::TENSOR);
-    auto dim = base_dataset->Get<int64_t>(milvus::knowhere::meta::DIM);
-    auto nq = result->nq;
-    auto k = result->topk;
-    for (auto i = 0; i < nq; i++) {
-        for (auto j = 0; j < k; ++j) {
-            auto dis = result->distances[i * k + j];
-            auto id = result->ids[i * k + j];
-            auto count_dis = CountDistance(query_vecs + i * dim, base_vecs + id * dim, dim, metric);
-            // assert(std::abs(dis - count_dis) < threshold);
-        }
-    }
-}
-}  // namespace
-
 using Param = std::pair<milvus::knowhere::IndexType, milvus::knowhere::MetricType>;
 
 class IndexWrapperTest : public ::testing::TestWithParam<Param> {
diff --git a/internal/core/unittest/test_utils/indexbuilder_test_utils.h b/internal/core/unittest/test_utils/indexbuilder_test_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..6dd18a76be80ceab503cb542d98bb61e845aee16
--- /dev/null
+++ b/internal/core/unittest/test_utils/indexbuilder_test_utils.h
@@ -0,0 +1,330 @@
+// Copyright (C) 2019-2020 Zilliz. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+// or implied. See the License for the specific language governing permissions and limitations under the License
+
+#pragma once
+
+#include <tuple>
+#include <map>
+#include <limits>
+#include <cmath>
+#include <google/protobuf/text_format.h>
+
+#include "pb/index_cgo_msg.pb.h"
+#include "index/knowhere/knowhere/index/vector_index/helpers/IndexParameter.h"
+#include "index/knowhere/knowhere/index/vector_index/adapter/VectorAdapter.h"
+#include "indexbuilder/IndexWrapper.h"
+#include "indexbuilder/index_c.h"
+#include "DataGen.h"
+#include "faiss/MetricType.h"
+#include "index/knowhere/knowhere/index/vector_index/VecIndexFactory.h"
+#include "indexbuilder/utils.h"
+
+constexpr int64_t DIM = 128;
+constexpr int64_t NQ = 10;
+constexpr int64_t K = 4;
+#ifdef MILVUS_GPU_VERSION
+int DEVICEID = 0;
+#endif
+
+namespace {
+auto
+generate_conf(const milvus::knowhere::IndexType& index_type, const milvus::knowhere::MetricType& metric_type) {
+    if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IDMAP) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IVFPQ) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::nlist, 100},
+            {milvus::knowhere::IndexParams::nprobe, 4},
+            {milvus::knowhere::IndexParams::m, 4},
+            {milvus::knowhere::IndexParams::nbits, 8},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IVFFLAT) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::nlist, 1024},
+            {milvus::knowhere::IndexParams::nprobe, 4},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+#ifdef MILVUS_GPU_VERSION
+            {milvus::knowhere::meta::DEVICEID, DEVICEID},
+#endif
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_IVFSQ8) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::nlist, 100},
+            {milvus::knowhere::IndexParams::nprobe, 4},
+            {milvus::knowhere::IndexParams::nbits, 8},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+#ifdef MILVUS_GPU_VERSION
+            {milvus::knowhere::meta::DEVICEID, DEVICEID},
+#endif
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_BIN_IVFFLAT) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::nlist, 100},
+            {milvus::knowhere::IndexParams::nprobe, 4},
+            {milvus::knowhere::IndexParams::m, 4},
+            {milvus::knowhere::IndexParams::nbits, 8},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_FAISS_BIN_IDMAP) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_NSG) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::IndexParams::nlist, 163},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::nprobe, 8},
+            {milvus::knowhere::IndexParams::knng, 20},
+            {milvus::knowhere::IndexParams::search_length, 40},
+            {milvus::knowhere::IndexParams::out_degree, 30},
+            {milvus::knowhere::IndexParams::candidate, 100},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+        };
+#ifdef MILVUS_SUPPORT_SPTAG
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_SPTAG_KDT_RNT) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            // {milvus::knowhere::meta::TOPK, 10},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_SPTAG_BKT_RNT) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            // {milvus::knowhere::meta::TOPK, 10},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+#endif
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_HNSW) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},       {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::M, 16},   {milvus::knowhere::IndexParams::efConstruction, 200},
+            {milvus::knowhere::IndexParams::ef, 200}, {milvus::knowhere::Metric::TYPE, metric_type},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_ANNOY) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::n_trees, 4},
+            {milvus::knowhere::IndexParams::search_k, 100},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_RHNSWFlat) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::M, 16},
+            {milvus::knowhere::IndexParams::efConstruction, 200},
+            {milvus::knowhere::IndexParams::ef, 200},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_RHNSWPQ) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::M, 16},
+            {milvus::knowhere::IndexParams::efConstruction, 200},
+            {milvus::knowhere::IndexParams::ef, 200},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+            {milvus::knowhere::IndexParams::PQM, 8},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_RHNSWSQ) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::IndexParams::M, 16},
+            {milvus::knowhere::IndexParams::efConstruction, 200},
+            {milvus::knowhere::IndexParams::ef, 200},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_NGTPANNG) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::IndexParams::edge_size, 10},
+            {milvus::knowhere::IndexParams::epsilon, 0.1},
+            {milvus::knowhere::IndexParams::max_search_edges, 50},
+            {milvus::knowhere::IndexParams::forcedly_pruned_edge_size, 60},
+            {milvus::knowhere::IndexParams::selectively_pruned_edge_size, 30},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    } else if (index_type == milvus::knowhere::IndexEnum::INDEX_NGTONNG) {
+        return milvus::knowhere::Config{
+            {milvus::knowhere::meta::DIM, DIM},
+            {milvus::knowhere::meta::TOPK, K},
+            {milvus::knowhere::Metric::TYPE, metric_type},
+            {milvus::knowhere::IndexParams::edge_size, 20},
+            {milvus::knowhere::IndexParams::epsilon, 0.1},
+            {milvus::knowhere::IndexParams::max_search_edges, 50},
+            {milvus::knowhere::IndexParams::outgoing_edge_size, 5},
+            {milvus::knowhere::IndexParams::incoming_edge_size, 40},
+            {milvus::knowhere::INDEX_FILE_SLICE_SIZE_IN_MEGABYTE, 4},
+        };
+    }
+    return milvus::knowhere::Config();
+}
+
+auto
+generate_params(const milvus::knowhere::IndexType& index_type, const milvus::knowhere::MetricType& metric_type) {
+    namespace indexcgo = milvus::proto::indexcgo;
+
+    indexcgo::TypeParams type_params;
+    indexcgo::IndexParams index_params;
+
+    auto configs = generate_conf(index_type, metric_type);
+    for (auto& [key, value] : configs.items()) {
+        auto param = index_params.add_params();
+        auto value_str = value.is_string() ? value.get<std::string>() : value.dump();
+        param->set_key(key);
+        param->set_value(value_str);
+    }
+
+    auto param = index_params.add_params();
+    param->set_key("index_type");
+    param->set_value(std::string(index_type));
+
+    return std::make_tuple(type_params, index_params);
+}
+
+auto
+GenDataset(int64_t N, const milvus::knowhere::MetricType& metric_type, bool is_binary, int64_t dim = DIM) {
+    auto schema = std::make_shared<milvus::Schema>();
+    auto faiss_metric_type = milvus::knowhere::GetMetricType(metric_type);
+    if (!is_binary) {
+        schema->AddDebugField("fakevec", milvus::engine::DataType::VECTOR_FLOAT, dim, faiss_metric_type);
+        return milvus::segcore::DataGen(schema, N);
+    } else {
+        schema->AddDebugField("fakebinvec", milvus::engine::DataType::VECTOR_BINARY, dim, faiss_metric_type);
+        return milvus::segcore::DataGen(schema, N);
+    }
+}
+
+using QueryResultPtr = std::unique_ptr<milvus::indexbuilder::IndexWrapper::QueryResult>;
+void
+PrintQueryResult(const QueryResultPtr& result) {
+    auto nq = result->nq;
+    auto k = result->topk;
+
+    std::stringstream ss_id;
+    std::stringstream ss_dist;
+
+    for (auto i = 0; i < nq; i++) {
+        for (auto j = 0; j < k; ++j) {
+            ss_id << result->ids[i * k + j] << " ";
+            ss_dist << result->distances[i * k + j] << " ";
+        }
+        ss_id << std::endl;
+        ss_dist << std::endl;
+    }
+    std::cout << "id\n" << ss_id.str() << std::endl;
+    std::cout << "dist\n" << ss_dist.str() << std::endl;
+}
+
+float
+L2(const float* point_a, const float* point_b, int dim) {
+    float dis = 0;
+    for (auto i = 0; i < dim; i++) {
+        auto c_a = point_a[i];
+        auto c_b = point_b[i];
+        dis += pow(c_b - c_a, 2);
+    }
+    return dis;
+}
+
+int
+hamming_weight(uint8_t n) {
+    int count = 0;
+    while (n != 0) {
+        count += n & 1;
+        n >>= 1;
+    }
+    return count;
+}
+float
+Jaccard(const uint8_t* point_a, const uint8_t* point_b, int dim) {
+    float dis;
+    int len = dim / 8;
+    float intersection = 0;
+    float union_num = 0;
+    for (int i = 0; i < len; i++) {
+        intersection += hamming_weight(point_a[i] & point_b[i]);
+        union_num += hamming_weight(point_a[i] | point_b[i]);
+    }
+    dis = 1 - (intersection / union_num);
+    return dis;
+}
+
+float
+CountDistance(const void* point_a,
+              const void* point_b,
+              int dim,
+              const milvus::knowhere::MetricType& metric,
+              bool is_binary = false) {
+    if (point_a == nullptr || point_b == nullptr) {
+        return std::numeric_limits<float>::max();
+    }
+    if (metric == milvus::knowhere::Metric::L2) {
+        return L2(static_cast<const float*>(point_a), static_cast<const float*>(point_b), dim);
+    } else if (metric == milvus::knowhere::Metric::JACCARD) {
+        return Jaccard(static_cast<const uint8_t*>(point_a), static_cast<const uint8_t*>(point_b), dim);
+    } else {
+        return std::numeric_limits<float>::max();
+    }
+}
+
+void
+CheckDistances(const QueryResultPtr& result,
+               const milvus::knowhere::DatasetPtr& base_dataset,
+               const milvus::knowhere::DatasetPtr& query_dataset,
+               const milvus::knowhere::MetricType& metric,
+               const float threshold = 1.0e-5) {
+    auto base_vecs = base_dataset->Get<float*>(milvus::knowhere::meta::TENSOR);
+    auto query_vecs = query_dataset->Get<float*>(milvus::knowhere::meta::TENSOR);
+    auto dim = base_dataset->Get<int64_t>(milvus::knowhere::meta::DIM);
+    auto nq = result->nq;
+    auto k = result->topk;
+    for (auto i = 0; i < nq; i++) {
+        for (auto j = 0; j < k; ++j) {
+            auto dis = result->distances[i * k + j];
+            auto id = result->ids[i * k + j];
+            auto count_dis = CountDistance(query_vecs + i * dim, base_vecs + id * dim, dim, metric);
+            // assert(std::abs(dis - count_dis) < threshold);
+        }
+    }
+}
+}  // namespace