diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index 0e85e7bfb60313b106d8838986fa685eedf2c409..19f7f00a63dca7b050f3ed793c548ebc56c88602 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -85,6 +85,8 @@ typedef struct SSnapDataHdr       SSnapDataHdr;
 #define VNODE_RSMA1_DIR "rsma1"
 #define VNODE_RSMA2_DIR "rsma2"
 
+#define VNODE_BUF_POOL_SEG 1  // TODO: change parameter here for sync/async commit
+
 // vnd.h
 void* vnodeBufPoolMalloc(SVBufPool* pPool, int size);
 void  vnodeBufPoolFree(SVBufPool* pPool, void* p);
diff --git a/source/dnode/vnode/src/vnd/vnodeBufPool.c b/source/dnode/vnode/src/vnd/vnodeBufPool.c
index 5a22114ab42206f0f63a4c41a3d4c53c438ff68b..33e4c8406fcc0ffd1b56e108801a671df1281f22 100644
--- a/source/dnode/vnode/src/vnd/vnodeBufPool.c
+++ b/source/dnode/vnode/src/vnd/vnodeBufPool.c
@@ -26,9 +26,9 @@ int vnodeOpenBufPool(SVnode *pVnode, int64_t size) {
 
   ASSERT(pVnode->pPool == NULL);
 
-  for (int i = 0; i < 3; i++) {
+  for (int i = 0; i < VNODE_BUF_POOL_SEG; i++) {
     // create pool
-    ret = vnodeBufPoolCreate(pVnode, size, &pPool);
+    ret = vnodeBufPoolCreate(pVnode, size / VNODE_BUF_POOL_SEG, &pPool);
     if (ret < 0) {
       vError("vgId:%d, failed to open vnode buffer pool since %s", TD_VID(pVnode), tstrerror(terrno));
       vnodeCloseBufPool(pVnode);
diff --git a/source/dnode/vnode/src/vnd/vnodeCommit.c b/source/dnode/vnode/src/vnd/vnodeCommit.c
index 8c73499229b89d67edbc21f86ff7f76b570a4275..87b768e9a3d3da3f1e7013e838255b158c2753c2 100644
--- a/source/dnode/vnode/src/vnd/vnodeCommit.c
+++ b/source/dnode/vnode/src/vnd/vnodeCommit.c
@@ -73,7 +73,7 @@ int vnodeBegin(SVnode *pVnode) {
 
 int vnodeShouldCommit(SVnode *pVnode) {
   if (pVnode->inUse) {
-    return pVnode->inUse->size > pVnode->config.szBuf / 3;
+    return pVnode->inUse->size > pVnode->config.szBuf / VNODE_BUF_POOL_SEG;
   }
   return false;
 }
@@ -236,7 +236,7 @@ int vnodeCommit(SVnode *pVnode) {
 
   // preCommit
   // smaSyncPreCommit(pVnode->pSma);
-  if(smaAsyncPreCommit(pVnode->pSma) < 0){
+  if (smaAsyncPreCommit(pVnode->pSma) < 0) {
     ASSERT(0);
     return -1;
   }
diff --git a/source/dnode/vnode/src/vnd/vnodeOpen.c b/source/dnode/vnode/src/vnd/vnodeOpen.c
index 4ccfea40510a6148ceec57893629c693d9d7a1cd..6dca82f6b058c123bc05888e62bcf4463bb69b5a 100644
--- a/source/dnode/vnode/src/vnd/vnodeOpen.c
+++ b/source/dnode/vnode/src/vnd/vnodeOpen.c
@@ -96,7 +96,7 @@ SVnode *vnodeOpen(const char *path, STfs *pTfs, SMsgCb msgCb) {
   taosThreadCondInit(&pVnode->poolNotEmpty, NULL);
 
   // open buffer pool
-  if (vnodeOpenBufPool(pVnode, pVnode->config.isHeap ? 0 : pVnode->config.szBuf / 3) < 0) {
+  if (vnodeOpenBufPool(pVnode, pVnode->config.szBuf) < 0) {
     vError("vgId:%d, failed to open vnode buffer pool since %s", TD_VID(pVnode), tstrerror(terrno));
     goto _err;
   }