I picked up this server for like $20 and just using it for my homelab setup. The problem is that the ethernet speeds are peaking at 8MB/s on the LAN and even worse to the internet down to like 5MB/s. This would normally point to being connected at 100Mbps but both server and router are reporting a 1000Mbps link. This is both pulling to server and pushing out which rules out drive speeds. Plus testing on SSD. My computer will do gigabit speeds connected to same router. I have used the same cable on the server with no change. Running Proxmox on Debian with kernel 5.3.18-2-pve. Any ideas or suggestions would be greatly appreciated
ethtool:
Settings for enp2s2f0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: off
Supports Wake-on: g
Wake-on: g
Current message level: 0x000000ff (255)
drv probe link timer ifdown ifup rx_err tx_err
Link detected: yes
lspci:
Ethernet controller: Broadcom Limited NetXtreme BCM5704 Gigabit Ethernet (rev 10)
Iperf:
[ 5] local 192.168.0.210 port 5201 connected to 192.168.0.10 port 53443
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 4.88 MBytes 4.87 MBytes/sec
[ 5] 1.00-2.00 sec 4.96 MBytes 4.96 MBytes/sec
[ 5] 2.00-3.00 sec 5.44 MBytes 5.44 MBytes/sec
[ 5] 3.00-4.00 sec 5.50 MBytes 5.50 MBytes/sec
[ 5] 4.00-5.00 sec 5.49 MBytes 5.49 MBytes/sec
[ 5] 5.00-6.00 sec 5.41 MBytes 5.41 MBytes/sec
[ 5] 6.00-7.00 sec 5.20 MBytes 5.20 MBytes/sec
[ 5] 7.00-8.00 sec 5.17 MBytes 5.17 MBytes/sec
[ 5] 8.00-9.00 sec 5.40 MBytes 5.40 MBytes/sec
[ 5] 9.00-10.00 sec 5.16 MBytes 5.16 MBytes/sec
[ 5] 10.00-10.06 sec 280 KBytes 4.37 MBytes/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.06 sec 52.9 MBytes 5.25 MBytes/sec receiver
​
I can run this for however long I want but this is exactly the same issue. I seems like somehow is locking to 100mbps no matter what the router and server say link speed is
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