diff --git a/cmake/cmake.define b/cmake/cmake.define
index 89d1853263..a3c2daf43b 100644
--- a/cmake/cmake.define
+++ b/cmake/cmake.define
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.0)
-set(CMAKE_VERBOSE_MAKEFILE FALSE)
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
 set(TD_BUILD_TAOSA_INTERNAL FALSE)
 
 #set output directory
@@ -151,6 +151,7 @@ ELSE ()
     CHECK_C_COMPILER_FLAG("-mavx2" COMPILER_SUPPORT_AVX2)
     CHECK_C_COMPILER_FLAG("-mavx512f" COMPILER_SUPPORT_AVX512F)
     CHECK_C_COMPILER_FLAG("-mavx512vbmi" COMPILER_SUPPORT_AVX512BMI)
+    CHECK_C_COMPILER_FLAG("-mavx512vl" COMPILER_SUPPORT_AVX512VL)
 
     IF (COMPILER_SUPPORT_SSE42)
         SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse4.2")
@@ -158,11 +159,11 @@ ELSE ()
     ENDIF()
 
     IF ("${SIMD_SUPPORT}" MATCHES "true")
-       IF (COMPILER_SUPPORT_FMA)
+        IF (COMPILER_SUPPORT_FMA)
            SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfma")
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfma")
-       ENDIF()
-       IF (COMPILER_SUPPORT_AVX)
+        ENDIF()
+        IF (COMPILER_SUPPORT_AVX)
             SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx")
             SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx")
         ENDIF()
@@ -174,8 +175,14 @@ ELSE ()
 
         IF (COMPILER_SUPPORT_AVX512F AND COMPILER_SUPPORT_AVX512BMI)
             SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx512f -mavx512vbmi -mavx512vl")
-            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx512f -mavx512vbmi  -mavx512vl")
-            MESSAGE(STATUS "avx512 supported by gcc")
+            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx512f -mavx512vbmi -mavx512vl")
+            MESSAGE(STATUS "avx512f/avx512bmi supported by gcc")
+        ENDIF()
+
+        IF (COMPILER_SUPPORT_AVX512VL)
+            SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx512vl")
+            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx512vl")
+        MESSAGE(STATUS "avx512vl supported by gcc")
         ENDIF()
     ENDIF()
 
diff --git a/source/util/src/tdecompress.c b/source/util/src/tdecompress.c
index 1353357ce8..41e3bf065d 100644
--- a/source/util/src/tdecompress.c
+++ b/source/util/src/tdecompress.c
@@ -111,7 +111,7 @@ int32_t tsDecompressIntImpl_Hw(const char *const input, const int32_t nelements,
               __m256i signmask = _mm256_and_si256(_mm256_set1_epi64x(1), zigzagVal);
               signmask = _mm256_sub_epi64(_mm256_setzero_si256(), signmask);
 
-              // get the four zigzag values here
+              // get four zigzag values here
               __m256i delta = _mm256_xor_si256(_mm256_srli_epi64(zigzagVal, 1), signmask);
 
               // calculate the cumulative sum (prefix sum) for each number
@@ -254,10 +254,11 @@ int32_t tsDecompressTimestampAvx512(const char* const input, const int32_t nelem
   __m128i  prevDelta = _mm_setzero_si128();
 
   // _mm_maskz_loadu_epi8
-#if __AVX512F__
+#if __AVX512VL__
 
   int32_t batch = nelements >> 1;
   int32_t remainder = nelements & 0x01;
+  __mmask16 mask2[16] = {0, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff};
 
   int32_t i = 0;
   if (batch > 1) {
@@ -267,7 +268,6 @@ int32_t tsDecompressTimestampAvx512(const char* const input, const int32_t nelem
     int8_t nbytes1 = flags & INT8MASK(4);  // range of nbytes starts from 0 to 7
     int8_t nbytes2 = (flags >> 4) & INT8MASK(4);
 
-    __mmask16 mask2[16] = {0, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff};
     __m128i data1 = _mm_maskz_loadu_epi8(mask2[nbytes1], (const void*)(input + ipos));
     __m128i data2 = _mm_maskz_loadu_epi8(mask2[nbytes2], (const void*)(input + ipos + nbytes1));
     data2 = _mm_broadcastq_epi64(data2);
@@ -305,7 +305,6 @@ int32_t tsDecompressTimestampAvx512(const char* const input, const int32_t nelem
     int8_t nbytes1 = flags & INT8MASK(4);  // range of nbytes starts from 0 to 7
     int8_t nbytes2 = (flags >> 4) & INT8MASK(4);
 
-    __mmask16 mask2[16] = {0, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff};
     __m128i data1 = _mm_maskz_loadu_epi8(mask2[nbytes1], (const void*)(input + ipos));
     __m128i data2 = _mm_maskz_loadu_epi8(mask2[nbytes2], (const void*)(input + ipos + nbytes1));
     data2 = _mm_broadcastq_epi64(data2);
@@ -357,10 +356,8 @@ int32_t tsDecompressTimestampAvx512(const char* const input, const int32_t nelem
     if (opos == 0) {
       ostream[opos++] = deltaOfDelta;
     } else {
-      int64_t prevV = prevVal[1];
-
       int64_t prevDeltaX = deltaOfDelta + prevDelta[1];
-      ostream[opos++] = prevV + prevDeltaX;
+      ostream[opos++] = prevVal[1] + prevDeltaX;
     }
   }
 
diff --git a/source/util/test/decompressTest.cpp b/source/util/test/decompressTest.cpp
index 0c4f660002..378b67edbb 100644
--- a/source/util/test/decompressTest.cpp
+++ b/source/util/test/decompressTest.cpp
@@ -53,7 +53,7 @@ TEST(utilTest, decompress_test) {
 }
 
 TEST(utilTest, decompress_perf_test) {
-  int32_t num = 100000;
+  int32_t num = 10000;
 
   int64_t* pList = static_cast<int64_t*>(taosMemoryCalloc(num, sizeof(int64_t)));
   int64_t iniVal = 1700000000;
@@ -71,7 +71,7 @@ TEST(utilTest, decompress_perf_test) {
   char* pOutput = static_cast<char*>(taosMemoryMalloc(num * sizeof(int64_t)));
 
   int64_t st = taosGetTimestampUs();
-  for(int32_t k = 0; k < 10; ++k) {
+  for(int32_t k = 0; k < 10000; ++k) {
     tsDecompressTimestamp(px, len, num, pOutput, sizeof(int64_t) * num, ONE_STAGE_COMP, NULL, 0);
   }
 
@@ -80,7 +80,7 @@ TEST(utilTest, decompress_perf_test) {
 
   memset(pOutput, 0, num * sizeof(int64_t));
   st = taosGetTimestampUs();
-  for(int32_t k = 0; k < 10; ++k) {
+  for(int32_t k = 0; k < 10000; ++k) {
     tsDecompressTimestampAvx512(px, num, pOutput, false);
   }