部分地区美西优化线路单线程限速 200Mbps 到底是真的还是假的

hjkl 2026-06-28 22:06 1

我总觉得这就是配置错误导致的。因为我见过很多次两位号称同一地区同一运营商的用户,用户 A 声称自己被限制 200Mbps;而用户 B 却表明速率远超 200Mbps。这根本不合理

最新回复 (32)
  • qs 06-28 22:07
    1

    真的

  • k2think 06-28 22:08
    2

    确实有限速的

  • badrobot 06-28 22:09
    3

    东部电信家宽

    DMIT EB的9929回程, 现场给你测一个,是单线程150


    PRO的那个CN2 GIA回程,也是150

  • Mewe 06-28 22:11
    4

    基本上都是

  • hjkl 楼主 06-28 22:11
    5

    @badrobot #3 你电脑是什么系统?服务器的 sysctl 配置是什么?

  • nsgba 06-28 22:12
    6

    大妈说是有的

  • 大海的味道你也知道 06-28 22:13
    7

    @hjkl #0


    真的,ai调优可以200+

  • Uevrmw 06-28 22:16
    8

    见过同一台美西cn2服务器在不同地区单线程速度差距有几百Mbps的吗?

  • hjkl 楼主 06-28 22:18
    9

    @Uevrmw #8 发出来见识一下,客户端也一样吗

  • Uevrmw 06-28 22:19
    10

    @hjkl #9 都是好久之前测的了,早没截图了

  • madmax 06-28 22:20
    11

    成都电信和联通 biggerbox pro 是这样

  • yylx 06-28 22:21
    12

    是的,我这江苏电信到搬瓦工 dc6 和 dc9 的 iperf3 单线程都是稳定 165M 的样子

  • Remedial 06-28 22:22
    13

    真的,看运营商的限速策略

  • rosnode 06-28 22:26
    14

    都是菜鸡。



    ^-^ ^-^ ^-^

  • xzzzzz 06-28 22:41
    15

    150也够用了啊 看4k甚至8k都够了

  • xzzzzz 06-28 22:41
    16

    @rosnode #14 老哥这是什么神鸡

  • hjkl 楼主 06-28 22:50
    17

    @qs #1 @k2think #2 @Mewe #4 @madmax #11 @yylx #12 @Remedial #13


    服务器 tcp 参数,iperf3 的测试结果发出来看一下

  • k2think 06-28 22:51
    18

    @hjkl #17


    我这里没问题,但很多大佬反馈洛杉矶机房,电信调整tcp窗口后,还是限制200mbps

  • guyuege 06-28 22:52
    19

    浙江单线程能跑g口

  • yylx 06-28 22:53
    20
    当前TCP缓冲区参数大小如下:
    net.ipv4.tcp_wmem = 4096 16384 4194304
    net.ipv4.tcp_rmem = 4096 131072 6291456

    root@aml:~# iperf3 -c 199.180.117.* -R
    Connecting to host 199.180.117.*, port 5201
    Reverse mode, remote host 199.180.117.* is sending
    [ 5] local 192.168.1.220 port 51084 connected to 199.180.117.* port 5201
    [ ID] Interval Transfer Bitrate
    [ 5] 0.00-1.00 sec 1.76 MBytes 14.8 Mbits/sec
    [ 5] 1.00-2.00 sec 19.6 MBytes 165 Mbits/sec
    [ 5] 2.00-3.00 sec 20.2 MBytes 170 Mbits/sec
    [ 5] 3.00-4.00 sec 19.6 MBytes 164 Mbits/sec
    [ 5] 4.00-5.00 sec 20.1 MBytes 169 Mbits/sec
    [ 5] 5.00-6.00 sec 19.9 MBytes 167 Mbits/sec
    [ 5] 6.00-7.00 sec 20.1 MBytes 168 Mbits/sec
    [ 5] 7.00-8.00 sec 19.5 MBytes 164 Mbits/sec
    [ 5] 8.00-9.00 sec 20.1 MBytes 169 Mbits/sec
    [ 5] 9.00-10.00 sec 19.8 MBytes 166 Mbits/sec
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [ ID] Interval Transfer Bitrate Retr
    [ 5] 0.00-10.13 sec 184 MBytes 153 Mbits/sec 0 sender
    [ 5] 0.00-10.00 sec 181 MBytes 152 Mbits/sec receiver

    iperf Done.
  • hjkl 楼主 06-28 22:56
    21

    @yylx #20


    把 tcp_wmem 改大点再试试?sysctl -w net.ipv4.tcp_wmem="4096 16384 8388608"

  • yylx 06-28 22:57
    22

    @hjkl #21


    [ ID] Interval           Transfer     Bitrate
    [ 5] 0.00-1.00 sec 1.54 MBytes 12.9 Mbits/sec
    [ 5] 1.00-2.00 sec 20.3 MBytes 170 Mbits/sec
    [ 5] 2.00-3.00 sec 22.1 MBytes 186 Mbits/sec
    [ 5] 3.00-4.00 sec 22.1 MBytes 185 Mbits/sec
    [ 5] 4.00-5.00 sec 22.0 MBytes 185 Mbits/sec
    [ 5] 5.00-6.00 sec 21.9 MBytes 184 Mbits/sec
    [ 5] 6.00-7.00 sec 22.0 MBytes 185 Mbits/sec
    [ 5] 7.00-8.00 sec 18.2 MBytes 152 Mbits/sec
    [ 5] 8.00-9.00 sec 20.8 MBytes 174 Mbits/sec
    [ 5] 9.00-10.00 sec 22.1 MBytes 186 Mbits/sec
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [ ID] Interval Transfer Bitrate Retr
    [ 5] 0.00-10.13 sec 199 MBytes 165 Mbits/sec 1 sender
    [ 5] 0.00-10.00 sec 193 MBytes 162 Mbits/sec receiver

    iperf Done.

    似乎还是差不太多? ^-^

    (稍微快了一点)

  • hjkl 楼主 06-28 22:58
    23

    @yylx #22 你电脑什么系统?

  • Ch1cC 06-28 22:58
    24

    ^-^ 移动eb好像没什么限制,能跑满上限,但是第一次测很多重传,第二次就是这个结果.端口8888









































































    ID Interval Transfer Bitrate
    [ 5] 0.00-1.01 sec 384 KBytes 3.10 Mbits/sec
    [ 5] 1.01-2.01 sec 13.8 MBytes 116 Mbits/sec
    [ 5] 2.01-3.00 sec 79.5 MBytes 670 Mbits/sec
    [ 5] 3.00-4.01 sec 77.1 MBytes 644 Mbits/sec
    [ 5] 4.01-5.00 sec 76.6 MBytes 645 Mbits/sec
    [ 5] 5.00-6.00 sec 77.0 MBytes 644 Mbits/sec
    [ 5] 6.00-7.01 sec 77.2 MBytes 644 Mbits/sec
    [ 5] 7.01-8.01 sec 76.4 MBytes 644 Mbits/sec
    [ 5] 8.01-9.00 sec 76.4 MBytes 644 Mbits/sec
    [ 5] 9.00-10.01 sec 77.9 MBytes 645 Mbits/sec
































    ID Interval Transfer Bitrate Retr
    [ 5] 0.00-10.19 sec 676 MBytes 557 Mbits/sec 0 sender
    [ 5] 0.00-10.01 sec 632 MBytes 530 Mbits/sec receiver
  • yylx 06-28 22:58
    25

    @hjkl #23


    家里云跑的,armbian系统。搬瓦工 iperf3 10线程能拉满 1G


    阿里云香港倒是能iperf3 单线程 600M+

  • hjkl 楼主 06-28 22:59
    26

    @yylx #25 那你电脑的 tcp 参数是多少?也调一下?

  • lnbiuc 06-28 23:00
    27

    不存在限速,需要调整服务端和客户端tcp窗口大小

    默认情况下,系统预置的窗口大小tcp_wmem max大约是4MB

    按照150ms延迟计算,最大速度只能跑224 Mbps

    如果手动调整到8MB,150ms下能跑到448 Mbps

    所以建议直接调到16或32MB

    注意是客户端和服务端都需要调

  • yylx 06-28 23:10
    28
    net.ipv4.tcp_wmem = 4096 16384 17500000
    net.ipv4.tcp_rmem = 4096 87380 17500000

    ~~我这边调到 140ms 1000M 的理论 tcp 上限了,但iperf3 还是只有 190M 不到 ^-^ ~~


    不对,客户端也改了之后能跑到 500M 了

  • hjkl 楼主 06-28 23:17
    29

    @yylx #28 这不就是纯配置错误。特别是 macOS 默认的 TCP 参数跟 Linux 是一样的,但很多人根本就不知道

  • qs 06-29 09:35
    30

    我debian改了这个

    sysctl -w net.ipv4.tcp_wmem="4096 16384 8388608"


    windows要改?

  • qs 06-29 10:01
    31

    你是对的 我用蜜汁调参改了一下 有速度了


    https://omnitt.com/


    搬瓦工配置


    kernel.pid_max = 65535
    kernel.panic = 1
    kernel.sysrq = 1
    kernel.core_pattern = core_%e
    kernel.printk = 3 4 1 3
    kernel.numa_balancing = 0
    kernel.sched_autogroup_enabled = 0

    vm.swappiness = 5
    vm.dirty_ratio = 5
    vm.dirty_background_ratio = 2
    vm.panic_on_oom = 1
    vm.overcommit_memory = 1
    vm.min_free_kbytes = 185794

    net.core.default_qdisc = fq
    net.core.netdev_max_backlog = 8192
    net.core.rmem_max = 49039803
    net.core.wmem_max = 49039803
    net.core.rmem_default = 262144
    net.core.wmem_default = 262144
    net.core.somaxconn = 2560
    net.core.optmem_max = 262144

    net.ipv4.tcp_fastopen = 3
    net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_fin_timeout = 10
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_max_tw_buckets = 32768
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_fack = 1

    net.ipv4.tcp_rmem = 32768 262144 49039803
    net.ipv4.tcp_wmem = 32768 262144 49039803
    net.ipv4.tcp_mtu_probing = 1
    net.ipv4.tcp_congestion_control = bbr
    net.ipv4.tcp_notsent_lowat = 524288
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_adv_win_scale = 45
    net.ipv4.tcp_moderate_rcvbuf = 1
    net.ipv4.tcp_no_metrics_save = 1

    net.ipv4.tcp_max_syn_backlog = 8192
    net.ipv4.tcp_max_orphans = 32768
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syn_retries = 2
    net.ipv4.tcp_abort_on_overflow = 0
    net.ipv4.tcp_stdurg = 0
    net.ipv4.tcp_rfc1337 = 0
    net.ipv4.tcp_syncookies = 1

    net.ipv4.ip_local_port_range = 1024 65535
    net.ipv4.ip_no_pmtu_disc = 0
    net.ipv4.route.gc_timeout = 100
    net.ipv4.neigh.default.gc_stale_time = 120
    net.ipv4.neigh.default.gc_thresh3 = 4096
    net.ipv4.neigh.default.gc_thresh2 = 2048
    net.ipv4.neigh.default.gc_thresh1 = 512

    net.ipv4.icmp_echo_ignore_broadcasts = 1
    net.ipv4.icmp_ignore_bogus_error_responses = 1
    net.ipv4.conf.all.rp_filter = 1
    net.ipv4.conf.default.rp_filter = 1
    net.ipv4.conf.all.arp_announce = 2
    net.ipv4.conf.default.arp_announce = 2
    net.ipv4.conf.all.arp_ignore = 1
    net.ipv4.conf.default.arp_ignore = 1
  • k2think 06-29 10:56
    32

    @lnbiuc #27


    部分省份运营商调大本地和vps的tcp窗口后还是单线程限速200mbps,当然我是听别的朋友说的,我这里没问题

* 帖子来源NodeSeek
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