diff --git a/0162-remove-mbuf-reserve-in-mbuf-alloc.patch b/0162-remove-mbuf-reserve-in-mbuf-alloc.patch
new file mode 100644
index 0000000..7ec6a30
--- /dev/null
+++ b/0162-remove-mbuf-reserve-in-mbuf-alloc.patch
@@ -0,0 +1,94 @@
+From aacafde3598f8e9ec4e9fd13a17ce9d0a23c3fe5 Mon Sep 17 00:00:00 2001
+From: jiangheng <jiangheng14@huawei.com>
+Date: Sat, 17 Dec 2022 20:33:16 +0800
+Subject: [PATCH] remove mbuf reserve in mbuf alloc
+
+---
+ src/lstack/core/lstack_dpdk.c    |  9 ---------
+ src/lstack/core/lstack_lwip.c    | 10 +++++-----
+ src/lstack/include/lstack_dpdk.h |  1 -
+ 3 files changed, 5 insertions(+), 15 deletions(-)
+
+diff --git a/src/lstack/core/lstack_dpdk.c b/src/lstack/core/lstack_dpdk.c
+index 4be31c3..76ebe96 100644
+--- a/src/lstack/core/lstack_dpdk.c
++++ b/src/lstack/core/lstack_dpdk.c
+@@ -194,15 +194,6 @@ int32_t pktmbuf_pool_init(struct protocol_stack *stack, uint16_t stack_num)
+     return 0;
+ }
+ 
+-int32_t gazelle_alloc_mbuf_with_reserve(struct rte_mempool *pool, struct rte_mbuf **mbufs, unsigned count)
+-{
+-    if (rte_mempool_avail_count(pool) < RESERVE_NIC_RECV) {
+-        return -1;
+-    }
+-
+-    return rte_pktmbuf_alloc_bulk(pool, mbufs, count);
+-}
+-
+ struct rte_ring *create_ring(const char *name, uint32_t count, uint32_t flags, int32_t queue_id)
+ {
+     char ring_name[RTE_RING_NAMESIZE] = {0};
+diff --git a/src/lstack/core/lstack_lwip.c b/src/lstack/core/lstack_lwip.c
+index d4e2d9c..c04ed27 100644
+--- a/src/lstack/core/lstack_lwip.c
++++ b/src/lstack/core/lstack_lwip.c
+@@ -134,7 +134,7 @@ static bool replenish_send_idlembuf(struct protocol_stack *stack, struct rte_rin
+         return false;
+     }
+ 
+-    if (gazelle_alloc_mbuf_with_reserve(stack->rxtx_pktmbuf_pool, (struct rte_mbuf **)pbuf, replenish_cnt) != 0) {
++    if (rte_pktmbuf_alloc_bulk(stack->rxtx_pktmbuf_pool, (struct rte_mbuf **)pbuf, replenish_cnt) != 0) {
+         stack->stats.tx_allocmbuf_fail++;
+         return true;
+     }
+@@ -225,7 +225,7 @@ int32_t gazelle_alloc_pktmbuf(struct rte_mempool *pool, struct rte_mbuf **mbufs,
+ {
+     struct pbuf_custom *pbuf_custom = NULL;
+ 
+-    int32_t ret = gazelle_alloc_mbuf_with_reserve(pool, mbufs, num);
++    int32_t ret = rte_pktmbuf_alloc_bulk(pool, mbufs, num);
+     if (ret != 0) {
+         return ret;
+     }
+@@ -243,7 +243,7 @@ struct pbuf *lwip_alloc_pbuf(pbuf_layer layer, uint16_t length, pbuf_type type)
+     struct rte_mbuf *mbuf;
+     struct protocol_stack *stack = get_protocol_stack();
+ 
+-    if (gazelle_alloc_mbuf_with_reserve(stack->rxtx_pktmbuf_pool, &mbuf, 1) != 0) {
++    if (rte_pktmbuf_alloc_bulk(stack->rxtx_pktmbuf_pool, &mbuf, 1) != 0) {
+         stack->stats.tx_allocmbuf_fail++;
+         return NULL;
+     }
+@@ -353,7 +353,7 @@ static inline ssize_t app_direct_write(struct protocol_stack *stack, struct lwip
+     }
+ 
+     /* first pbuf get from send_ring. and malloc pbufs attach to first pbuf */
+-    if (gazelle_alloc_mbuf_with_reserve(stack->rxtx_pktmbuf_pool, (struct rte_mbuf **)&pbufs[1], write_num - 1) != 0) {
++    if (rte_pktmbuf_alloc_bulk(stack->rxtx_pktmbuf_pool, (struct rte_mbuf **)&pbufs[1], write_num - 1) != 0) {
+         stack->stats.tx_allocmbuf_fail++;
+         free(pbufs);
+         return 0;
+@@ -389,7 +389,7 @@ static inline ssize_t app_direct_attach(struct protocol_stack *stack, struct pbu
+     }
+ 
+     /* first pbuf get from send_ring. and malloc pbufs attach to first pbuf */
+-    if (gazelle_alloc_mbuf_with_reserve(stack->rxtx_pktmbuf_pool, (struct rte_mbuf **)pbufs, write_num) != 0) {
++    if (rte_pktmbuf_alloc_bulk(stack->rxtx_pktmbuf_pool, (struct rte_mbuf **)pbufs, write_num) != 0) {
+         stack->stats.tx_allocmbuf_fail++;
+         free(pbufs);
+         return 0;
+diff --git a/src/lstack/include/lstack_dpdk.h b/src/lstack/include/lstack_dpdk.h
+index a0f09af..c3bc527 100644
+--- a/src/lstack/include/lstack_dpdk.h
++++ b/src/lstack/include/lstack_dpdk.h
+@@ -51,6 +51,5 @@ void dpdk_skip_nic_init(void);
+ int32_t dpdk_init_lstack_kni(void);
+ void dpdk_restore_pci(void);
+ bool port_in_stack_queue(uint32_t src_ip, uint32_t dst_ip, uint16_t src_port, uint16_t dst_port);
+-int32_t gazelle_alloc_mbuf_with_reserve(struct rte_mempool *pool, struct rte_mbuf **mbufs, unsigned count);
+ 
+ #endif /* GAZELLE_DPDK_H */
+-- 
+2.23.0
+
diff --git a/gazelle.spec b/gazelle.spec
index 2c347d2..5dbc356 100644
--- a/gazelle.spec
+++ b/gazelle.spec
@@ -2,7 +2,7 @@
 
 Name:          gazelle
 Version:       1.0.1
-Release:       35
+Release:       36
 Summary:       gazelle is a high performance user-mode stack
 License:       MulanPSL-2.0
 URL:           https://gitee.com/openeuler/gazelle
@@ -176,6 +176,7 @@ Patch9158:     0158-add-RXTX_NB_MBUF_MAX-to-limit-mbuf_pool_size-to-its-.patch
 Patch9159:     0159-stack-thread-params-default-val.patch
 Patch9160:     0160-optimite-net-type.patch
 Patch9161:     0161-app-bind-numa-when-epoll-poll-create.patch
+Patch9162:     0162-remove-mbuf-reserve-in-mbuf-alloc.patch
 
 %description
 %{name} is a high performance user-mode stack.
@@ -216,6 +217,9 @@ install -Dpm 0640 %{_builddir}/%{name}-%{version}/src/ltran/ltran.conf       %{b
 %config(noreplace) %{conf_path}/ltran.conf
 
 %changelog
+* Sat Dec 17 2022 jiangheng <jiangheng14@huawei.com> - 1.0.1-36
+- remove mbuf reserve in mbuf alloc
+
 * Sat Dec 17 2022 jiangheng <jiangheng14@huawei.com> - 1.0.1-35
 - optimite net type
   app bind numa when epoll/poll create