我正在使用 iperf 在 10Gbit 网络中的两个对等点 (CentOS7) 之间进行一些测试。
/proc/sys/net/ipv4和中的配置/proc/sys/net/core完全相同，因此每个套接字缓冲区默认大小或 tcp 逻辑都是相同的。
当在没有交换机或路由器的情况下直接连接机器进行测试运行时，两个方向都工作正常。
当我在中间放置一个交换机时，一个方向继续工作得很好（大约 9,41Gbps），但另一个吞吐量下降到 3-4Gpbs，我想问题出在客户端。
ss这是测试顺利时涉及的套接字上的命令日志（带有开关，但客户端方向良好）
$ ss -t -m -i -e '( dport >= :5201 and dport <= :5300 )'
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 3346328 192.168.1.13:targus-getdata3 192.168.1.32:targus-getdata3 timer:(on,204ms,0) uid:1000 ino:531203930 sk:ffff9e19879af440 <->
skmem:(r0,rb369280,t264032,tb4194304,f888440,w3391880,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.178/0.136 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:524 ssthresh:223 bytes_acked:5871839852 bytes_received:60 segs_out:4055294 segs_in:849177 send 1910.0Mbps lastrcv:75037 pacing_rate 3819.9Mbps unacked:151 retrans:0/2 reordering:10 rcv_space:43440
ESTAB 0 2410920 192.168.1.13:5216 192.168.1.32:5216 timer:(on,207ms,0) uid:1000 ino:530956112 sk:ffff9e1aac4c5d00 <->
skmem:(r0,rb369280,t198024,tb3307520,f936904,w2442296,o0,bl0,d0) ts sack cubic wscale:11,11 rto:207 rtt:6.575/0.321 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:380 ssthresh:285 bytes_acked:3195772228 bytes_received:60 segs_out:2207164 segs_in:584200 send 669.5Mbps lastrcv:75037 pacing_rate 1338.9Mbps unacked:135 retrans:0/2 reordering:9 rcv_space:43440
ESTAB 0 2907584 192.168.1.13:5207 192.168.1.32:5207 timer:(on,204ms,0) uid:1000 ino:531298256 sk:ffff9e1aa64007c0 <->
skmem:(r0,rb369280,t264032,tb3942912,f1067904,w2946176,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.101/0.238 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:453 ssthresh:276 bytes_acked:5872097596 bytes_received:60 segs_out:4055482 segs_in:1087602 send 1692.2Mbps lastrcv:75036 pacing_rate 3384.0Mbps unacked:163 retrans:0/1 reordering:13 rcv_space:43440
ESTAB 0 4105080 192.168.1.13:5211 192.168.1.32:5211 timer:(on,204ms,0) uid:1000 ino:531277263 sk:ffff9e19839e8f80 <->
skmem:(r0,rb369280,t264032,tb4194304,f109528,w4158504,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.204/0.205 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:488 ssthresh:186 bytes_acked:5872007820 bytes_received:60 segs_out:4055438 segs_in:1081061 send 1764.4Mbps lastrcv:75033 pacing_rate 3527.9Mbps unacked:180 retrans:0/2 reordering:9 rcv_space:43440
ESTAB 0 3825616 192.168.1.13:targus-getdata1 192.168.1.32:targus-getdata1 timer:(on,204ms,0) uid:1000 ino:531339320 sk:ffff9e1c8d622e80 <->
skmem:(r0,rb369280,t264032,tb4194304,f399120,w3877104,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.192/0.274 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:484 ssthresh:184 bytes_acked:5872555164 bytes_received:60 segs_out:4055801 segs_in:1084450 send 1756.5Mbps lastrcv:75036 pacing_rate 3512.0Mbps unacked:167 reordering:9 rcv_space:43440
ESTAB 0 3281944 192.168.1.13:5208 192.168.1.32:5208 timer:(on,204ms,0) uid:1000 ino:531203929 sk:ffff9e198a9dcd80 <->
skmem:(r0,rb369280,t264032,tb4194304,f948728,w3327496,o0,bl4608,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.26/0.175 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:536 ssthresh:243 bytes_acked:5870095012 bytes_received:60 segs_out:4054122 segs_in:854843 send 1904.6Mbps lastrcv:75035 pacing_rate 3808.6Mbps unacked:185 retrans:0/2 reordering:12 rcv_space:43440
ESTAB 0 2814912 192.168.1.13:5215 192.168.1.32:5215 timer:(on,204ms,0) uid:1000 ino:531336741 sk:ffff9e1ab786c5c0 <->
skmem:(r0,rb369280,t264032,tb4194304,f1434832,w2853680,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.159/0.152 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:592 ssthresh:274 bytes_acked:5871974516 bytes_received:60 segs_out:4055425 segs_in:857804 send 2170.9Mbps lastrcv:75037 pacing_rate 4340.5Mbps unacked:189 retrans:0/3 reordering:33 rcv_space:43440
ESTAB 0 3793760 192.168.1.13:nomad 192.168.1.32:nomad timer:(on,204ms,0) uid:1000 ino:531279592 sk:ffff9e1ad35d9740 <->
skmem:(r0,rb369280,t264032,tb4194304,f443264,w3845248,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.226/0.141 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:579 ssthresh:115 bytes_acked:5870063156 bytes_received:60 segs_out:4054104 segs_in:828650 send 2079.1Mbps lastrcv:75034 pacing_rate 4157.4Mbps unacked:190 retrans:0/1 reordering:8 rcv_space:43440
ESTAB 0 3053832 192.168.1.13:5206 192.168.1.32:5206 timer:(on,204ms,0) uid:1000 ino:531341868 sk:ffff9e1ad888d540 <->
skmem:(r0,rb369280,t264032,tb4194304,f1189272,w3095144,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.204/0.247 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:572 ssthresh:266 bytes_acked:5872523308 bytes_received:60 segs_out:4055788 segs_in:1088650 send 2068.1Mbps lastrcv:75039 pacing_rate 4135.1Mbps unacked:174 retrans:0/1 reordering:10 rcv_space:43440
ESTAB 0 0 10.180.244.35:47750 185.142.153.241:5207 timer:(keepalive,44min,0) uid:986 ino:942443 sk:ffff9e1ab700f440 <->
skmem:(r0,rb367360,t0,tb46080,f0,w0,o0,bl0,d31) ts sack cubic wscale:8,7 rto:419 rtt:218.784/0.245 ato:55 mss:1368 rcvmss:740 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:834310 bytes_received:2580548 segs_out:22886 segs_in:45440 send 150.1Kbps lastsnd:10219 lastrcv:10219 lastack:10000 pacing_rate 300.1Kbps retrans:0/8 rcv_rtt:16328 rcv_space:29200
ESTAB 0 3379632 192.168.1.13:targus-getdata2 192.168.1.32:targus-getdata2 timer:(on,204ms,0) uid:1000 ino:531317093 sk:ffff9e198bfde4c0 <->
skmem:(r0,rb369280,t264032,tb4194304,f842848,w3425184,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.267/0.242 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:520 ssthresh:240 bytes_acked:5871207076 bytes_received:60 segs_out:4054879 segs_in:867131 send 1843.8Mbps lastrcv:75039 pacing_rate 3687.4Mbps unacked:174 retrans:0/2 reordering:10 rcv_space:43440
ESTAB 0 2772920 192.168.1.13:5214 192.168.1.32:5214 timer:(on,206ms,0) uid:1000 ino:531325347 sk:ffff9e1aac4c1740 <->
skmem:(r0,rb369280,t198024,tb3176960,f429096,w2810840,o0,bl0,d0) ts sack cubic wscale:11,11 rto:207 rtt:6.258/0.642 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:365 ssthresh:177 bytes_acked:2676851020 bytes_received:60 segs_out:1848773 segs_in:489790 send 675.6Mbps lastsnd:4 lastrcv:75037 lastack:1 pacing_rate 1351.2Mbps unacked:115 retrans:0/2 reordering:8 rcv_space:43440
ESTAB 0 3858920 192.168.1.13:5210 192.168.1.32:5210 timer:(on,204ms,0) uid:1000 ino:531323601 sk:ffff9e19a6dea6c0 <->
skmem:(r0,rb369280,t264032,tb4194304,f369064,w3911256,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.161/0.186 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:502 ssthresh:271 bytes_acked:5871582108 bytes_received:60 segs_out:4055110 segs_in:1087690 send 1839.7Mbps lastsnd:1 lastrcv:75037 pacing_rate 3679.0Mbps unacked:145 retrans:0/3 reordering:13 rcv_space:43440
ESTAB 0 3974760 192.168.1.13:5213 192.168.1.32:5213 timer:(on,203ms,0) uid:1000 ino:530956111 sk:ffff9e1a0fbf07c0 <->
skmem:(r0,rb369280,t264032,tb4194304,f251272,w4029048,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.245/0.221 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:522 ssthresh:17 bytes_acked:5869792380 bytes_received:60 segs_out:4053913 segs_in:1091433 send 1863.4Mbps lastsnd:1 lastrcv:75033 lastack:1 pacing_rate 3726.7Mbps unacked:180 retrans:0/7 sacked:2 reordering:8 rcv_space:43440
ESTAB 0 2869936 192.168.1.13:5205 192.168.1.32:5205 timer:(on,204ms,0) uid:1000 ino:531298257 sk:ffff9e1c373fbe00 <->
skmem:(r0,rb369280,t264032,tb4194304,f1362576,w2909552,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.152/0.231 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:561 ssthresh:348 bytes_acked:5871411244 bytes_received:60 segs_out:4055029 segs_in:850916 send 2061.7Mbps lastsnd:1 lastrcv:75040 pacing_rate 4122.7Mbps unacked:182 retrans:0/3 reordering:20 rcv_space:43440
ESTAB 0 2974192 192.168.1.13:5204 192.168.1.32:5204 timer:(on,203ms,0) uid:1000 ino:530585403 sk:ffff9e19829e0f80 <->
skmem:(r0,rb369280,t264032,tb4194304,f1265664,w3014656,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.189/0.265 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:662 ssthresh:196 bytes_acked:5872327828 bytes_received:60 segs_out:4055645 segs_in:837871 send 2404.7Mbps lastsnd:1 lastrcv:75039 lastack:1 pacing_rate 4809.2Mbps unacked:164 retrans:0/3 reordering:11 rcv_space:43440
ESTAB 0 3383976 192.168.1.13:5212 192.168.1.32:5212 timer:(on,204ms,0) uid:1000 ino:531325348 sk:ffff9e1aacee1f00 <->
skmem:(r0,rb369280,t264032,tb4194304,f854888,w3429528,o0,bl0,d0) ts sack cubic wscale:11,11 rto:204 rtt:3.154/0.197 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:504 ssthresh:177 bytes_acked:5871947004 bytes_received:60 segs_out:4055394 segs_in:1092830 send 1851.1Mbps lastsnd:1 lastrcv:75033 pacing_rate 3701.7Mbps unacked:177 retrans:0/3 reordering:8 rcv_space:43440
这一个方向不好
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 230232 192.168.1.32:55347 192.168.1.13:targus-getdata1 timer:(on,087ms,0) uid:1000 ino:3314212 sk:ffff9f2dc90445c0 <->
skmem:(r0,rb367360,t0,tb287232,f92600,w239176,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.141/0.024 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1152848429 bytes_received:28 segs_out:818686 segs_in:316443 send 246.5Mbps lastsnd:114 lastrcv:86272 lastack:114 pacing_rate 491.6Mbps unacked:4 retrans:0/22512 sacked:1 rcv_space:42340
ESTAB 0 476392 192.168.1.32:47801 192.168.1.13:5212 timer:(on,112ms,0) uid:1000 ino:3314214 sk:ffff9f2dc90426c0 <->
skmem:(r0,rb367360,t0,tb435200,f32744,w487448,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.174/0.142 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:2 ssthresh:2 bytes_acked:1229032053 bytes_received:28 segs_out:872417 segs_in:348168 send 133.1Mbps lastsnd:89 lastrcv:86272 lastack:89 pacing_rate 398.3Mbps unacked:3 retrans:0/23631 sacked:1 rcv_space:42340
ESTAB 0 516936 192.168.1.32:32797 192.168.1.13:5216 timer:(on,010ms,0) uid:1000 ino:3314223 sk:ffff9f2dc9041740 <->
skmem:(r0,rb367360,t8184,tb513536,f20872,w527992,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.113/0.008 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:751517725 bytes_received:28 segs_out:533526 segs_in:199119 send 307.5Mbps lastrcv:86268 pacing_rate 611.7Mbps unacked:3 retrans:0/14511 rcv_space:42340
ESTAB 0 104256 192.168.1.32:33146 192.168.1.13:5204 timer:(on,010ms,0) uid:1000 ino:3312994 sk:ffff9f2db3d7a6c0 <->
skmem:(r0,rb367360,t8184,tb165376,f119152,w110224,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.139/0.021 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1270737965 bytes_received:28 segs_out:902063 segs_in:366789 send 250.0Mbps lastrcv:86273 pacing_rate 500.0Mbps unacked:3 retrans:0/24474 rcv_space:42340
ESTAB 0 417024 192.168.1.32:56956 192.168.1.13:5210 timer:(on,201ms,0) uid:1000 ino:3312999 sk:ffff9f2db3d79740 <->
skmem:(r0,rb367360,t9632,tb435200,f67104,w428512,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.13/0.011 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:4 ssthresh:4 bytes_acked:1156831877 bytes_received:28 segs_out:821362 segs_in:316618 send 356.4Mbps lastrcv:86272 pacing_rate 1960.4Mbps unacked:12 retrans:1/22428 lost:1 sacked:8 rcv_space:42340
ESTAB 0 444536 192.168.1.32:56215 192.168.1.13:5213 timer:(on,010ms,0) uid:1000 ino:3313000 sk:ffff9f2db3d7b640 <->
skmem:(r0,rb367360,t8184,tb435200,f65448,w454744,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.128/0.006 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1458483581 bytes_received:28 segs_out:1035626 segs_in:402065 send 271.5Mbps lastrcv:86272 pacing_rate 541.4Mbps unacked:3 retrans:0/28378 rcv_space:42340
ESTAB 0 212856 192.168.1.32:41928 192.168.1.13:5214 timer:(on,010ms,0) uid:1000 ino:3313001 sk:ffff9f2db3d787c0 <->
skmem:(r0,rb367360,t8184,tb304640,f123544,w220520,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.126/0.009 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1256332645 bytes_received:28 segs_out:891525 segs_in:344577 send 275.8Mbps lastrcv:86268 pacing_rate 549.4Mbps unacked:3 retrans:0/23885 rcv_space:42340
ESTAB 0 143352 192.168.1.32:58690 192.168.1.13:5205 timer:(on,141ms,0) uid:1000 ino:3312996 sk:ffff9f2db3d7ec80 <->
skmem:(r0,rb367360,t0,tb174080,f120168,w150168,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.127/0.003 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:2 ssthresh:2 bytes_acked:1426351013 bytes_received:28 segs_out:1012369 segs_in:396073 send 182.4Mbps lastsnd:60 lastrcv:86272 lastack:60 pacing_rate 726.1Mbps unacked:5 retrans:1/27311 lost:1 sacked:3 rcv_space:42340
ESTAB 0 134664 192.168.1.32:45540 192.168.1.13:5211 timer:(on,010ms,0) uid:1000 ino:3314216 sk:ffff9f2dc90464c0 <->
skmem:(r0,rb367360,t8184,tb174080,f113752,w140200,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.148/0.042 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1139529725 bytes_received:28 segs_out:808670 segs_in:326992 send 234.8Mbps lastrcv:86272 pacing_rate 466.9Mbps unacked:3 retrans:0/21695 rcv_space:42340
ESTAB 0 127424 192.168.1.32:34184 192.168.1.13:targus-getdata2 timer:(on,010ms,0) uid:1000 ino:3312995 sk:ffff9f2db3d78f80 <->
skmem:(r0,rb367360,t8184,tb174080,f108272,w133392,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.128/0.006 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1527909389 bytes_received:28 segs_out:1084467 segs_in:427388 send 271.5Mbps lastrcv:86272 pacing_rate 541.9Mbps unacked:3 retrans:0/29274 rcv_space:42340
ESTAB 0 130320 192.168.1.32:42723 192.168.1.13:nomad timer:(on,010ms,0) uid:1000 ino:3312997 sk:ffff9f2db3d7c5c0 <->
skmem:(r0,rb367360,t7752,tb182784,f114000,w135856,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.152/0.045 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1288660693 bytes_received:28 segs_out:914064 segs_in:373200 send 228.6Mbps lastrcv:86269 pacing_rate 456.9Mbps unacked:3 retrans:0/24098 rcv_space:42340
ESTAB 0 110048 192.168.1.32:34972 192.168.1.13:targus-getdata3 timer:(on,076ms,0) uid:1000 ino:3314211 sk:ffff9f2dc9045540 <->
skmem:(r0,rb367360,t0,tb165376,f121552,w116016,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.108/0.015 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:2 ssthresh:2 bytes_acked:1500525077 bytes_received:28 segs_out:1064664 segs_in:415032 send 214.5Mbps lastsnd:125 lastrcv:86272 lastack:125 pacing_rate 642.8Mbps unacked:4 retrans:1/28381 lost:1 sacked:2 rcv_space:42340
ESTAB 0 325800 192.168.1.32:43465 192.168.1.13:5208 timer:(on,096ms,0) uid:1000 ino:3312998 sk:ffff9f2db3d7d540 <->
skmem:(r0,rb367360,t0,tb304640,f10184,w333880,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.207/0.161 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:2 ssthresh:2 bytes_acked:1195816381 bytes_received:28 segs_out:848449 segs_in:331177 send 111.9Mbps lastsnd:105 lastrcv:86272 lastack:105 pacing_rate 557.9Mbps unacked:5 retrans:1/22600 lost:1 sacked:3 rcv_space:42340
ESTAB 0 225888 192.168.1.32:49260 192.168.1.13:5215 timer:(on,010ms,0) uid:1000 ino:3313010 sk:ffff9f2db3d78000 <->
skmem:(r0,rb367360,t8184,tb330752,f122800,w233552,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.126/0.01 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1268630509 bytes_received:28 segs_out:900567 segs_in:353282 send 275.8Mbps lastrcv:86268 pacing_rate 550.0Mbps unacked:3 retrans:0/24434 rcv_space:42340
ESTAB 0 296840 192.168.1.32:36581 192.168.1.13:5206 timer:(on,010ms,0) uid:1000 ino:3314213 sk:ffff9f2dc9043640 <->
skmem:(r0,rb367360,t0,tb435200,f190264,w305352,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.128/0.005 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:1142285269 bytes_received:28 segs_out:810910 segs_in:324374 send 271.5Mbps lastrcv:86272 pacing_rate 540.4Mbps unacked:3 retrans:0/22031 rcv_space:42340
ESTAB 0 131768 192.168.1.32:55639 192.168.1.13:5207 timer:(on,010ms,0) uid:1000 ino:3314215 sk:ffff9f2dc9040f80 <->
skmem:(r0,rb367360,t7752,tb182784,f112552,w137304,o0,bl0,d0) ts sack cubic wscale:11,11 rto:201 rtt:0.126/0.012 ato:40 mss:1448 rcvmss:536 advmss:1448 cwnd:3 ssthresh:2 bytes_acked:971172213 bytes_received:28 segs_out:690051 segs_in:276486 send 275.8Mbps lastrcv:86272 pacing_rate 549.4Mbps unacked:3 retrans:0/19345 rcv_space:42340
我注意到cwnd和ssthresh非常不同，但我不明白为什么。我还删除了一个 tcpdump，并且以我所得到的坏方向TCP Retrasmission TCP DUP Ack或TCP out-of-order相当大的比例删除。
也许交换机出于某种原因赋予了某些端口特权？我可以去哪里调查？我可以采取一些措施来防止延迟重传？
我尝试编辑 ip 路由添加initcwnd 200或ssthresh 200或rto_min 50ms但没有任何反应