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? Spoiler "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"]
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.
