diff --git a/0030-refactor-add-event-limit-send-pkts-num.patch b/0030-refactor-add-event-limit-send-pkts-num.patch
new file mode 100644
index 0000000000000000000000000000000000000000..921315bc683b4476962ddea1e70ba6dbb29ba485
--- /dev/null
+++ b/0030-refactor-add-event-limit-send-pkts-num.patch
@@ -0,0 +1,71 @@
+From 0db924042e5d5750b81081634a8c261d631c9d89 Mon Sep 17 00:00:00 2001
+From: wuchangsheng <wuchangsheng2@huawei.com>
+Date: Thu, 6 Oct 2022 20:23:20 +0800
+Subject: [PATCH] refactor add event, limit send pkts num
+
+---
+ src/api/sockets.c       | 4 ++--
+ src/core/tcp_out.c      | 8 ++++++++
+ src/include/eventpoll.h | 3 ++-
+ 3 files changed, 12 insertions(+), 3 deletions(-)
+
+diff --git a/src/api/sockets.c b/src/api/sockets.c
+index fe17c29..f84127c 100644
+--- a/src/api/sockets.c
++++ b/src/api/sockets.c
+@@ -2659,7 +2659,7 @@ event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
+       }
+ #if USE_LIBOS
+       if (conn->acceptmbox != NULL && !sys_mbox_empty(conn->acceptmbox)) {
+-        add_epoll_event(conn, POLLIN);
++        add_sock_event(sock, POLLIN);
+       }
+ #endif
+       break;
+@@ -2680,7 +2680,7 @@ event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
+     case NETCONN_EVT_ERROR:
+       sock->errevent = 1;
+ #if USE_LIBOS
+-      add_epoll_event(conn, EPOLLERR);
++      add_sock_event(sock, EPOLLERR);
+ #endif
+       break;
+     default:
+diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
+index 2d341b3..061af5f 100644
+--- a/src/core/tcp_out.c
++++ b/src/core/tcp_out.c
+@@ -1358,8 +1358,16 @@ tcp_output(struct tcp_pcb *pcb)
+     for (; useg->next != NULL; useg = useg->next);
+   }
+   /* data available and window allows it to be sent? */
++#if USE_LIBOS
++  /* avoid send cose too much time, limit send pkts num max 10 */
++  uint16_t send_pkt = 0;
++  while (seg != NULL && send_pkt < 10 &&
++         lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len <= wnd) {
++    send_pkt++;
++#else
+   while (seg != NULL &&
+          lwip_ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len <= wnd) {
++#endif
+     LWIP_ASSERT("RST not expected here!",
+                 (TCPH_FLAGS(seg->tcphdr) & TCP_RST) == 0);
+     /* Stop sending if the nagle algorithm would prevent it
+diff --git a/src/include/eventpoll.h b/src/include/eventpoll.h
+index aacc1d2..a10c84b 100644
+--- a/src/include/eventpoll.h
++++ b/src/include/eventpoll.h
+@@ -63,7 +63,8 @@ struct libos_epoll {
+     int efd; /* eventfd */
+ };
+ 
+-extern void add_epoll_event(struct netconn*, uint32_t);
++struct lwip_sock;
++extern void add_sock_event(struct lwip_sock *sock, uint32_t event);
+ extern int32_t lstack_epoll_close(int32_t);
+ 
+ #endif /* __EVENTPOLL_H__ */
+-- 
+2.27.0
+
diff --git a/lwip.spec b/lwip.spec
index 76e1abbe997fd2f1fd7979dc3410cc987503f53e..724879a925a0bbc0e2f15090652ef575e0b58cda 100644
--- a/lwip.spec
+++ b/lwip.spec
@@ -4,7 +4,7 @@
 Summary: lwip is a small independent implementation of the TCP/IP protocol suite
 Name:    lwip
 Version: 2.1.2
-Release: 9
+Release: 10
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.zip
@@ -43,6 +43,7 @@ Patch9026:  0026-modify-EISCONN-condition.patch
 Patch9027:  0027-per-thread-reassdata-variables.patch
 Patch9028:  0028-fix-EISCONN-err-and-remove-same-customized-modificat.patch
 Patch9029:  0029-refactor-tcp-new-port.patch
+Patch9030:  0030-refactor-add-event-limit-send-pkts-num.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -90,6 +91,7 @@ find %{_builddir}/%{name}-%{version} -type f -exec dos2unix -q {} \;
 %patch9027 -p1
 %patch9028 -p1
 %patch9029 -p1
+%patch9030 -p1
 
 %build
 cd %{_builddir}/%{name}-%{version}/src
@@ -105,6 +107,10 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Thu Oct 6 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.2-10
+- refactor add event
+  limit send pkts num max 10
+
 * Thu Oct 6 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.2-9
 - fix multithread duplicate port num
   support select appropriate port num to rss same as nic