| 項目１ | 項目２ | 意 味 | チューニング パラメータ |
|---|---|---|---|
| packets send | 送信パケット数 | ||
| XXX data packets (XXX bytes) | 送信データ数（バイト数） | - | |
| XXX data packets (XXX bytes) retransmitted | 再送数（バイト数） | tcp_rexmit_interval_initial tcp_rexmit_interval_max tcp_rexmit_interval_min | |
| XXX ack-only packets (XXX delayed) | ACK だけの数（遅延） | - | |
| XXX URG only packets | URG だけの数 | - | |
| XXX window probe packets | ウインドウ検査数 | - | |
| XXX window update packets | ウインドウ更新数 | - | |
| XXX control packets | 制御パケット数 | - | |
| packets received | 受信パケット数 | ||
| XXX acks (for XXXX bytes) | ACK 数（バイト数) | - | |
| XXX duplicate acks | 重複 ACK 数 | - | |
| XXX acks for unsent data | 未送信データ ACK 数 | - | |
| XXX packets (XXX bytes) received in-sequence | 正順数(バイト数) | - | |
| XXX completely duplicate packets (X bytes) | 完全重複数(バイト数) | - | |
| XXX packets with some dup, data (X bytes duped) | 部分重複数(バイト数) | - | |
| XXX out of order packets (X bytes) | 非正順数(バイト数) | - | |
| XXX packets (X bytes) of data after window | 遅延 ACK 送信数 | - | |
| XXX window probe | ウインドウ検査数 | - | |
| XXX window update packets | ウィンドウ更新数 | - | |
| XXX packets received after close | クローズ後受信した数 | - | |
| XXX discarded for bad checksum | チェックサム・エラーで破棄された数 | - | |
| XXX discarded for bad header offset fields | ヘッダ不良で破棄された数 | - | |
| XXX discarded because packet too short | サイズ不良で破棄された数 | - | |
| XXX connection requests | 接続要求数 | - | |
| XXX connection accepts | 接続受理数 | - | |
| XXX connections established (including accepts) | 接続確立数 （受理数含む） | - | |
| XXX connections closed (including XX drops) | 接続クローズ数 (XX 破棄を含む） | - | |
| XXX embryonic connections dropped | 未確立で破棄された数 | tcp_conn_request_max | |
| XXX segments updated rtt (of XXX attempts) | 往復時間更新セグメント数（XXX 試行） | - | |
| retransmit timeouts | 再送タイムアウト | ||
| XXX connections dropped by rexmit timeout | 接続破棄数 | tcp_rexmit_interval_initial tcp_rexmit_interval_max tcp_rexmit_interval_min | |
| XXX persist timeouts | タイムアウト継続数 | - | |
| keepalive timeouts | キープアライブ・タイムアウト | ||
| XXX keepalive probes sent | キープアライブ検査受信数 | - | |
| XXX connections dropped by keepalive | キープアライブ接続破棄数 | tcp_keepalive_interval | |
| XXX connect requests dropped due to full queue | キューが一杯で接続が破棄された数 | tcp_conn_request_max | |
| XXX connect requests dropped due to no listener | 受けてがなく接続が破棄された数 | - | |
|
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|
> netstat -sp tcp
tcp:
8894325 packets sent
6149600 data packets (994807514 bytes)
102 data packets (38022 bytes) retransmitted
2744589 ack-only packets (1499119 delayed)
6 URG only packets
46 window probe packets
45 window update packets
95525 control packets
8708199 packets received
4638927 acks (for 994402800 bytes)
31541 duplicate acks
0 acks for unsent data
5769584 packets (886338026 bytes) received in-sequence
0 completely duplicate packets (0 bytes)
0 packets with some dup, data (0 bytes duped)
0 out of order packets (0 bytes)
0 packets (0 bytes) of data after window
1 window probe
3987567 window update packets
170 packets received after close
0 segments discarded for bad checksum
0 bad TCP segments dropped due to state change
18616 connection requests
29000 connection accepts
47616 connections established (including accepts)
65341 connections closed (including 17725 drops)
17081 embryonic connections dropped
4608473 segments updated rtt (of 4608473 attempts)
91 retransmit timeouts
1 connection dropped by rexmit timeout
46 persist timeouts
685 keepalive timeouts
639 keepalive probes sent
0 connections dropped by keepalive
0 connect requests dropped due to full queue
17287 connect requests dropped due to no listener
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