[SOLVED] Extremely low speeds when backuping

Luksus

New Member
Jan 9, 2026
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Hello everyone.
Im writing this because I dont know what to do anymore. I installed PBS 2 weeks before and tried doing backup test today. Lets just say that 30 GB took 19 hours.
My internet connection is not the problem. The PBS is located somewhere connected through Tailscale. It also has SSD. My main node has SSD as boot, 2x 1TB HDDs with 12 GB of ram and Intel Xeon E31270.
I will add some logs that could help, but I don't know why the upload speed to the PBS is 0,29MB/s. Any ideas? I have Gigabit switch with 250Mb/s plan on both locations.
Every help is appreciated. Thanks!

Uploaded 13 chunks in 185 seconds.
Time per request: 14255815 microseconds.
TLS speed: 0.29 MB/s
SHA256 speed: 303.54 MB/s
Compression speed: 365.67 MB/s
Decompress speed: 470.24 MB/s
AES256/GCM speed: 322.85 MB/s
Verify speed: 184.32 MB/s
┌───────────────────────────────────┬───────────────────┐
│ Name │ Value │
╞═══════════════════════════════════╪═══════════════════╡
│ TLS (maximal backup upload speed) │ 0.29 MB/s (0%) │
├───────────────────────────────────┼───────────────────┤
│ SHA256 checksum computation speed │ 303.54 MB/s (15%) │
├───────────────────────────────────┼───────────────────┤
│ ZStd level 1 compression speed │ 365.67 MB/s (49%) │
├───────────────────────────────────┼───────────────────┤
│ ZStd level 1 decompression speed │ 470.24 MB/s (39%) │
├───────────────────────────────────┼───────────────────┤
│ Chunk verification speed │ 184.32 MB/s (24%) │
├───────────────────────────────────┼───────────────────┤
│ AES256 GCM encryption speed │ 322.85 MB/s (9%) │
 

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Something is really wrong with your TLS-Speed.
 
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I assume its a backup over WAN by your description. I'd bet that your ISP is doing some traffic inspenction or limiting. What is your ISP/Location for both endpoints?
 
Run tailscale status and examine the connection information for the peer device.
  • If the output contains "direct", the connection is direct.
  • If the output includes "relay", the connection is relayed through a DERP server.
  • If the output includes "peer-relay", the connection is relayed through a peer relay device.
 
Run tailscale status and examine the connection information for the peer device.
  • If the output contains "direct", the connection is direct.
  • If the output includes "relay", the connection is relayed through a DERP server.
  • If the output includes "peer-relay", the connection is relayed through a peer relay device.
That was it.
Had fra relay, so I tried playing with forwarding ports and uPnP And got it working at beautiful 10MB/s. Got to work on that, because the maxed out speed is 250Mb/s.
Thanks!
 
Run tailscale status and examine the connection information for the peer device.
Jeez. Whoising the IP from the log file to be necessary instead that the user provides such information beforehand is ... well .. wow. Good find!