diff --git a/gopher_tech.md b/gopher_tech.md
index b7838ee2660730c5c0d622456acf436965997f6e..b40d66d87e75bd029ff43112fb6c9310d411b3f2 100644
--- a/gopher_tech.md
+++ b/gopher_tech.md
@@ -224,8 +224,8 @@
 | protocol     |                | key          |       | 协议族（IPv4、IPv6）                                         |
 | rx_bytes     | tcp_tx_rx(0x8) | Gauge        | bytes | rx   bytes                                                   |
 | tx_bytes     | tcp_tx_rx(0x8) | Gauge        | bytes | tx   bytes                                                   |
-| segs_in      | tcp_tx_rx(0x8) | Counter      | segs  | total   number of segments received                          |
-| segs_out     | tcp_tx_rx(0x8) | Counter      | segs  | total   number of segments sent                              |
+| segs_in      | tcp_tx_rx(0x8) | Gauge        | segs  | total   number of segments received                          |
+| segs_out     | tcp_tx_rx(0x8) | Gauge        | segs  | total   number of segments sent                              |
 
 ## DNS访问监控
 
@@ -314,11 +314,17 @@
 | ssl             |            | label        |      | Indicates whether an SSL-encrypted l7 session is used.       |                            |
 | bytes_sent      | l7_link    | gauge        |      | Number of bytes sent by a l7 session.                        |                            |
 | bytes_recv      | l7_link    | gauge        |      | Number of bytes recv by a l7 session.                        |                            |
+| segs_sent       | l7_link    | gauge        |      | Number of segs sent by a l7 session.                         |                            |
+| segs_recv       | l7_link    | gauge        |      | Number of segs recv by a l7 session.                         |                            |
 | throughput_req  | l7_rpc     | histogram    | qps  | Request throughput of l7 session.                            |                            |
 | throughput_resp | l7_rpc     | histogram    | qps  | Response throughput of l7 session.                           |                            |
-| latency_avg     | l7_rpc     | gauge        | ns   | Average l7 session latency.                                  |                            |
-| latency         | l7_rpc     | histogram    | ns   | L7 session P50 latency.                                      |                            |
+| req_count       | l7_rpc     | gauge        |      | Request num of l7 session.                                   |                            |
+| resp_count      | l7_rpc     | gauge        |      | Response num of l7 session.                                  |                            |
+| latency_avg     | l7_rpc     | gauge        | ns   | L7 session averaged latency.                                 |                            |
+| latency         | l7_rpc     | histogram    | ns   | L7 session histogram latency.                                |                            |
+| latency_sum     | l7_rpc     | gauge        | ns   | L7 session sum latency.                                      |                            |
 | err_ratio       | l7_rpc     | gauge        | %    | L7 session error rate.                                       |                            |
+| err_count       | l7_rpc     | gauge        |      | L7 session error count.                                      |                            |
 
 # 应用性能监控
 
@@ -346,6 +352,8 @@
 | rcv_wnd            | tcp_windows(0x2)  | histogram    |       | Size of TCP receive window.                                  |
 | zero_snd_wnd_ratio | tcp_windows(0x2)  | Gauge        |       | Ratio of the number of times of sending window 0 to the number of sent bytes |
 | zero_rcv_wnd_ratio | tcp_windows(0x2)  | Gauge        |       | Ratio of the number of receive window 0 windows to the number of received bytes |
+| zero_snd_wnd_count | tcp_windows(0x2)  | Gauge        |       | The number of receive window 0 windows.                      |
+| zero_snd_wnd_count | tcp_windows(0x2)  | Gauge        |       | The number of sending  window 0 windows.                     |
 | avl_snd_wnd        | tcp_windows(0x2)  | histogram    |       | Size of TCP available send window.                           |
 | syn_srtt           | tcp_srtt          | histogram    | us    | RTT   of syn packet(us).                                     |
 | syn_srtt_max       | tcp_srtt          | Gauge        | us    | RTT   of syn packet(us).                                     |
@@ -596,6 +604,8 @@
 | rcv_wnd            | tcp_windows(0x2)  | histogram    |       | Size of TCP receive window.                                  |
 | zero_snd_wnd_ratio | tcp_windows(0x2)  | Gauge        |       | Ratio of the number of times of sending window 0 to the number of sent bytes |
 | zero_rcv_wnd_ratio | tcp_windows(0x2)  | Gauge        |       | Ratio of the number of receive window 0 windows to the number of received bytes |
+| zero_snd_wnd_count | tcp_windows(0x2)  | Gauge        |       | The number of receive window 0 windows.                      |
+| zero_snd_wnd_count | tcp_windows(0x2)  | Gauge        |       | The number of sending  window 0 windows.                     |
 | avl_snd_wnd        | tcp_windows(0x2)  | histogram    |       | Size of TCP available send window.                           |
 | syn_srtt           | tcp_srtt          | histogram    | us    | RTT   of syn packet(us).                                     |
 | syn_srtt_max       | tcp_srtt          | Gauge        | us    | RTT   of syn packet(us).                                     |
@@ -719,6 +729,8 @@
 | rcv_wnd            | tcp_windows(0x2)  | histogram    |       | Size of TCP receive window.                                  |
 | zero_snd_wnd_ratio | tcp_windows(0x2)  | Gauge        |       | Ratio of the number of times of sending window 0 to the number of sent bytes |
 | zero_rcv_wnd_ratio | tcp_windows(0x2)  | Gauge        |       | Ratio of the number of receive window 0 windows to the number of received bytes |
+| zero_snd_wnd_count | tcp_windows(0x2)  | Gauge        |       | The number of receive window 0 windows.                      |
+| zero_snd_wnd_count | tcp_windows(0x2)  | Gauge        |       | The number of sending  window 0 windows.                     |
 | avl_snd_wnd        | tcp_windows(0x2)  | histogram    |       | Size of TCP available send window.                           |
 | syn_srtt           | tcp_srtt          | histogram    | us    | RTT   of syn packet(us).                                     |
 | syn_srtt_max       | tcp_srtt          | Gauge        | us    | RTT   of syn packet(us).                                     |