Hetzner packet loss issue

Discussion in 'Systems Administration' started by Pjo, Nov 13, 2019.

  1. Pjo

    Pjo

    Hi,
    I bought new dedicated server on hetzner, and I have issue with packet loss. It's my first hetzner server. I didn't change default network settings. I made mtr, and it seems like the issue is on server. Does anyone have some ideas what I can do to fix the issue?

    Here is Hetzner -> OVH:
    Code (Text):
    mtr -s 1000 -r -c 1000 yyy.yyy.yyy.yyy
    Start: 2019-11-13T18:05:34+0100
    HOST: Crafted2                    Loss%   Snt   Last   Avg  Best  Wrst StDev
      1.|-- xxx.xxx.xxx.xxx              1.3%   542    0.3   0.4   0.2  10.3   0.9
      2.|-- 213.239.203.145            1.3%   542    0.4   3.8   0.3 144.5  13.6
      3.|-- 213.239.224.254            1.5%   542    4.9  10.8   4.8 113.3  13.1
      4.|-- 213.239.224.221            1.5%   542    5.2   9.1   5.1  97.6  11.9
      5.|-- 94.23.122.250              1.5%   542    5.8   6.4   5.3  30.6   3.5
      6.|-- ???                       100.0   542    0.0   0.0   0.0   0.0   0.0
      7.|-- ???                       100.0   542    0.0   0.0   0.0   0.0   0.0
      8.|-- ???                       100.0   542    0.0   0.0   0.0   0.0   0.0
      9.|-- 213.186.32.212             1.5%   542   14.3  15.2  14.1  53.2   4.3
    10.|-- ???                       100.0   542    0.0   0.0   0.0   0.0   0.0
    11.|-- ???                       100.0   542    0.0   0.0   0.0   0.0   0.0
    12.|-- ???                       100.0   542    0.0   0.0   0.0   0.0   0.0
    13.|-- yyy.yyy.yyy.yyy            1.5%   542   13.5  13.4  13.4  15.3   0.1
     
    OVH -> Hetzner:
    Code (Text):
    mtr -s 1000 -r -c 1000 xxx.xxx.xxx.xxx
    Start: Wed Nov 13 18:00:28 2019
    HOST: ns3084513                   Loss%   Snt   Last   Avg  Best  Wrst StDev
      1.|-- yyy.yyy.yyy.yyy            0.0%  1000    0.3   0.3   0.3  26.6   1.1
      2.|-- 10.17.145.8                0.0%  1000    0.6   0.4   0.4   2.5   0.1
      3.|-- 10.73.0.42                 0.0%  1000    0.2   0.2   0.1   4.1   0.2
      4.|-- 10.95.33.10                0.0%  1000    1.4   4.1   0.7 111.0  11.8
      5.|-- fra-fr5-sbb2-nc5.de.eu     0.0%  1000    8.9   8.9   8.6  16.4   0.3
      6.|-- 10.200.0.6                 0.0%  1000    8.8  10.0   8.6  73.1   4.7
      7.|-- ???                       100.0  1000    0.0   0.0   0.0   0.0   0.0
      8.|-- core5.fra.hetzner.com      0.0%  1000    8.8  12.7   8.8 140.8  13.0
      9.|-- core24.fsn1.hetzner.com    0.0%  1000   13.5  14.1  13.4  74.7   3.7
     10.|-- ex9k1.dc11.fsn1.hetzner.c  0.0%  1000   13.6  14.5  13.4 298.2  13.5
     11.|-- static.xxx.xxx.xxx.xxx.cli  9.4%  1000   13.4  13.4  13.3  15.9   0.1

    Ping from my home -> hetzner
    Code (Text):
    Packets: Sent = 500, Received = 483, Lost = 17 (3% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 49ms, Maximum = 240ms, Average = 52ms[/FONT]


    Edit:
    I've read kern.log, and it seams like my server has issues with overheating. I'm not an linux expert. So any ideas how I can fix it?

    "Nov 13 21:53:43 Crafted2 kernel: [245312.629277] CPU12: Core temperature above threshold, cpu clock throttled (total events = 60322) Nov 13 21:53:43 Crafted2 kernel: [245312.629278] CPU4: Core temperature above threshold, cpu clock throttled (total events = 60322) Nov 13 21:53:43 Crafted2 kernel: [245312.638244] CPU4: Core temperature/speed normal Nov 13 21:53:43 Crafted2 kernel: [245312.638245] CPU12: Core temperature/speed normal Nov 13 21:54:34 Crafted2 kernel: [245363.172300] CPU6: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172301] CPU7: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172302] CPU4: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172303] CPU0: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172304] CPU8: Package temperature above threshold, cpu clock throttled (total events = 215588) Nov 13 21:54:34 Crafted2 kernel: [245363.172329] CPU11: Package temperature above threshold, cpu clock throttled (total events = 215588) Nov 13 21:54:34 Crafted2 kernel: [245363.172329] CPU14: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172330] CPU3: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172331] CPU12: Package temperature above threshold, cpu clock throttled (total events = 215588) Nov 13 21:54:34 Crafted2 kernel: [245363.172332] CPU15: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172333] CPU2: Package temperature above threshold, cpu clock throttled (total events = 215587) Nov 13 21:54:34 Crafted2 kernel: [245363.172334] CPU9: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172334] CPU1: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172335] CPU10: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172336] CPU13: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.172337] CPU5: Package temperature above threshold, cpu clock throttled (total events = 215589) Nov 13 21:54:34 Crafted2 kernel: [245363.173290] CPU4: Package temperature/speed normal Nov 13 21:54:34 Crafted2 kernel: [245363.173291] CPU6: Package temperature/speed normal"]
     
    #1 Pjo, Nov 13, 2019
    Last edited: Nov 13, 2019
  2. The packet loss has to do with the upstream/transit provider, not Hetzner. I've run an MTR and noticed 0 packet loss from TransIP Amsterdam <> Hetzner Nuremberg.

    Although running an MTR from TransIP Amsterdam to 'proof.ovh.net' (Is being routed to RBX) and got about 40% packet loss on their AMSIX router (with ipv6 mode), running in IPv4 mode I got 0 packet loss. Same story for Hetzner with v6 & v4 mode.
     
  3. Same issue here, I am already in contact with them about this issue.