Slow internet using networkmanager with ethernet

pickle dog · 2025-02-27 16:01:22

I've been dealing with this problem for a week where I only get max 300 kiB/s down when I should be getting next to 80-100 MB/s and I only can open some website like archwiki while others like twitter can't even load in

journal: https://pastebin.com/twDP6V5f

seth · 2025-02-27 16:41:56

Feb 27 15:28:05 evalover kernel: r8169 0000:27:00.0 eth0: RTL8168h/8111h, d8:bb:c1:54:16:e5, XID 541, IRQ 98
Feb 27 15:28:05 evalover kernel: r8169 0000:27:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko]
Feb 27 15:28:05 evalover kernel: r8169 0000:27:00.0 enp39s0: renamed from eth0
Feb 27 15:28:06 evalover kernel: Generic FE-GE Realtek PHY r8169-0-2700:00: attached PHY driver (mii_bus:phy_addr=r8169-0-2700:00, irq=MAC)
Feb 27 15:28:06 evalover kernel: r8169 0000:27:00.0 enp39s0: Link is Down
Feb 27 15:28:10 evalover kernel: r8169 0000:27:00.0 enp39s0: Link is Up - 1Gbps/Full - flow control rx/tx
Feb 27 13:04:48 evalover kernel: r8169 0000:27:00.0 enp39s0: Link is Down
Feb 27 18:52:43 evalover kernel: Generic FE-GE Realtek PHY r8169-0-2700:00: attached PHY driver (mii_bus:phy_addr=r8169-0-2700:00, irq=MAC)
Feb 27 18:52:44 evalover kernel: r8169 0000:27:00.0 enp39s0: Link is Down
Feb 27 18:52:47 evalover kernel: r8169 0000:27:00.0 enp39s0: Link is Up - 1Gbps/Full - flow control rx/tx

Link change is response to S3
There's no indication of any problems, can you test the LAN performance (eg. w/ https://wiki.archlinux.org/title/Benchmarking#iperf )?
One thing is that you seem to have activated "jumbo frames", https://wiki.archlinux.org/title/Networ … eue_length what is gonna cause problems if any hop in the chain does not support that - so make sure to reset the MTU to 1500 first.

others like twitter can't even load

Consider that a feature. "Social" media is incompatible w/ nerdom

pickle dog · 2025-02-27 17:22:06

hey so I know this is stupid but, I don't really know what to change with the jumbo frames? I went into /etc/systemd/network/30-mtu.link and pasted the code inside.

seth · 2025-02-27 20:02:33

You're actually not supposed to change anything itfp
What's the output of

ip a

pickle dog · 2025-02-27 20:04:02

here's the output

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: enp39s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether d8:bb:c1:54:16:e5 brd ff:ff:ff:ff:ff:ff
altname enxd8bbc15416e5
inet 192.168.1.100/24 brd 192.168.1.255 scope global dynamic noprefixroute enp39s0
valid_lft 79849sec preferred_lft 79849sec
inet6 2001:1a40:163e:4f00::14/128 scope global dynamic noprefixroute
valid_lft 252649sec preferred_lft 166249sec
inet6 2001:1a40:163e:4f00:ff3d:c69:9a1d:a0c/64 scope global dynamic noprefixroute
valid_lft 259173sec preferred_lft 172773sec
inet6 fe80::56a9:4d6f:b34d:1acc/64 scope link noprefixroute
valid_lft forever preferred_lft forever

edit: the output of hdparm
/dev/sda2:
Timing cached reads: 49680 MB in 1.99 seconds = 24955.62 MB/sec
Timing buffered disk reads: 898 MB in 3.00 seconds = 299.19 MB/sec
[icy@evalover ~]$ sudo hdparm -Tt /dev/sda3

/dev/sda3:
Timing cached reads: 47596 MB in 1.99 seconds = 23905.18 MB/sec
Timing buffered disk reads: 1302 MB in 3.00 seconds = 433.81 MB/sec
[icy@evalover ~]$ sudo hdparm -Tt /dev/sda1

/dev/sda1:
Timing cached reads: 49238 MB in 1.99 seconds = 24728.41 MB/sec
Timing buffered disk reads: 100 MB in 0.23 seconds = 432.27 MB/sec

Last edited by pickle dog (2025-02-28 19:11:01)

Arch Linux

#1 2025-02-27 16:01:22

Slow internet using networkmanager with ethernet

#2 2025-02-27 16:41:56

Re: Slow internet using networkmanager with ethernet

#3 2025-02-27 17:22:06

Re: Slow internet using networkmanager with ethernet

#4 2025-02-27 20:02:33

Re: Slow internet using networkmanager with ethernet

#5 2025-02-27 20:04:02

Re: Slow internet using networkmanager with ethernet

Board footer