Upload slow on B2 cloud storage?

Hello all

First of all, thank you for this amazing software. You can’t imagine how many time you saved my life (and my family included :wink: )

I have decided to write you because i’m facing a quiet strange behavior about slowness on the initial upload on B2.
Before going further, I depict the system here:

Ubuntu 20.04.3 LTS
/dev/nvme0n1p5 234G 108G 114G 49% /
5.11.0-40-generic #44~20.04.2-Ubuntu SMP Tue Oct 26 18:07:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Dupliacti version : Duplicati -
I’m connected via RJ45 to my fiber routing.
I tested my speed via the blackblaze speed test webpage : Test Your Internet Bandwidth Speed

Download 90.57Mbits
Upload: 11.58 Mbits
Ping: 241ms
Jitter 277,72ms

I have been quite surprised about the ping value so I made a google test:

ping www.google.fr
PING www.google.fr(par10s34-in-x03.1e100.net (2a00:1450:4007:817::2003)) 56 data bytes
64 octets de par10s34-in-x03.1e100.net (2a00:1450:4007:817::2003) : icmp_seq=1 ttl=116 temps=26.8 ms
64 octets de par10s34-in-x03.1e100.net (2a00:1450:4007:817::2003) : icmp_seq=2 ttl=116 temps=25.3 ms
64 octets de par10s34-in-x03.1e100.net (2a00:1450:4007:817::2003) : icmp_seq=3 ttl=116 temps=26.1 ms
64 octets de par10s34-in-x03.1e100.net (2a00:1450:4007:817::2003) : icmp_seq=4 ttl=116 temps=32.1 ms
--- statistiques ping www.google.fr ---
4 paquets transmis, 4 reçus, 0 % paquets perdus, temps 3003 ms
rtt min/avg/max/mdev = 25.348/27.601/32.115/2.659 ms

SO now on my backup side.
I used packet size of 500Mb instead of 50Mb but my upload is around 1.3Mbits or 3Mbits. But nothing more.
I saw some related similar support requests but they are mostly from 2018… so i’m not sure where to start to have a look.
Any advice?


My best guess: 12MBit line capacity bandwidth equals 1.5 MByte/s Upload-Speed Duplicati?

1 Like