diff --git a/plugins/mqtt/command/read_write.c b/plugins/mqtt/command/read_write.c
index 5e7d70a91..eaf930f48 100644
--- a/plugins/mqtt/command/read_write.c
+++ b/plugins/mqtt/command/read_write.c
@@ -23,14 +23,6 @@
 
 #include "read_write.h"
 
-// static uint64_t current_time()
-// {
-//     struct timeval tv;
-//     gettimeofday(&tv, NULL);
-//     uint64_t ms = tv.tv_sec;
-//     return ms * 1000 + tv.tv_usec / 1000;
-// }
-
 int command_rw_read_once_request(neu_plugin_t *plugin, neu_json_mqtt_t *mqtt,
                                  neu_json_read_req_t *req)
 {
diff --git a/src/adapter/adapter.c b/src/adapter/adapter.c
index 5ff813c2d..e3f411b86 100644
--- a/src/adapter/adapter.c
+++ b/src/adapter/adapter.c
@@ -815,7 +815,7 @@ static int update_timestamp(void *usr_data)
     uint64_t       timestamp = 0;
 
     gettimeofday(&tv, NULL);
-    timestamp          = tv.tv_sec * 1000 + tv.tv_usec / 1000;
+    timestamp = (int64_t) tv.tv_sec * 1000 + (int64_t) tv.tv_usec / 1000;
     adapter->timestamp = timestamp;
 
     neu_plugin_to_plugin_common(adapter->plugin)->timestamp = timestamp;
diff --git a/src/base/group.c b/src/base/group.c
index 37bcb314b..019a03deb 100644
--- a/src/base/group.c
+++ b/src/base/group.c
@@ -256,7 +256,7 @@ static void update_timestamp(neu_group_t *group)
 
     gettimeofday(&tv, NULL);
 
-    group->timestamp = tv.tv_sec * 1000 * 1000 + tv.tv_usec;
+    group->timestamp = (int64_t) tv.tv_sec * 1000 * 1000 + (int64_t) tv.tv_usec;
 }
 
 static UT_array *to_array(tag_elem_t *tags)
diff --git a/src/base/neu_plugin_common.c b/src/base/neu_plugin_common.c
index 729cce528..69d95bbe8 100644
--- a/src/base/neu_plugin_common.c
+++ b/src/base/neu_plugin_common.c
@@ -32,7 +32,8 @@ void neu_plugin_common_init(neu_plugin_common_t *common)
     common->magic      = NEU_PLUGIN_MAGIC_NUMBER;
     common->link_state = NEU_NODE_LINK_STATE_DISCONNECTED;
     common->tag_size   = 0;
-    common->timestamp  = time(NULL) * 1000; // don't need much precision at init
+    common->timestamp  = time(NULL);
+    common->timestamp *= 1000; // don't need much precision at init
 }
 
 bool neu_plugin_common_check(neu_plugin_t *plugin)
diff --git a/src/event/event_linux.c b/src/event/event_linux.c
index b35256bb8..d1448d3ce 100644
--- a/src/event/event_linux.c
+++ b/src/event/event_linux.c
@@ -103,10 +103,7 @@ static void *event_loop(void *arg)
                 assert(size != -1);
 
                 nng_mtx_lock(data->ctx.timer->mtx);
-                epoll_ctl(epoll_fd, EPOLL_CTL_DEL, data->fd, NULL);
                 ret = data->callback.timer(data->usr_data);
-                timerfd_settime(data->fd, 0, &data->ctx.timer->value, NULL);
-                epoll_ctl(epoll_fd, EPOLL_CTL_ADD, data->fd, &event);
                 nng_mtx_unlock(data->ctx.timer->mtx);
             }
             break;
diff --git a/version b/version
index ecf00d901..1506473e2 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-2.2.5
\ No newline at end of file
+2.2.6
\ No newline at end of file