Finally, I will hopefully be able to put my laptop to sleep while connected to the ethernet and not killing my local network at the same time.
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Realtek RTL8156 2.5G Chips + RTL8153 To Be Supported By Linux 5.13
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I'm more interested in Realtek getting their 802.11ac and 802.11ax drivers upstreamed than their ethernet drivers.
The kernel only has two to three USB 802.11ac devices supported, and these are all from Mediatek.
Not a single USB 802.11ac chipset driver from Realtek has ever made it into mainline, and 802.11ac is more than seven years old now.
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Originally posted by ahrs View PostWill this actually support 2.5gbit download? My motherboard has an onboard 2.5gbit Realtek adapter (05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller) and I can max it out when uploading to my file server but downloads are limited to ~1.70 Gbits/sec. Another machine with a 10gbit NIC can pull ~7 Gbits/sec from it so I know the problem isn't with the server. I also tested on Windows 10 and see the same issue there.
Busses, switches, routers, cables, sizes, filters, drivers, servers, protocols etc, etc. Ad nauseam.
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Originally posted by ahrs View PostWill this actually support 2.5gbit download? My motherboard has an onboard 2.5gbit Realtek adapter (05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller) and I can max it out when uploading to my file server but downloads are limited to ~1.70 Gbits/sec. Another machine with a 10gbit NIC can pull ~7 Gbits/sec from it so I know the problem isn't with the server. I also tested on Windows 10 and see the same issue there.
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Originally posted by Sonadow View PostI have never seen any NIC ever reach its advertised download speeds on any operating system.
Code:[ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 28.7 GBytes 24.7 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 28.7 GBytes 24.7 Gbits/sec receiver
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Originally posted by brad0 View Post
You're the exception from everyone else.
The catch is it used to blast syslog with link up messages and you can't change the MTU or use VLANs.
cdc_ncm 2-2:2.0 enp0s20f0u2c2: 2500 mbit/s downlink 2500 mbit/s uplink
Connecting to host lcars, port 5201
[ 5] local 192.168.1.50 port 40812 connected to 192.168.1.253 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 279 MBytes 2.34 Gbits/sec 14 615 KBytes
[ 5] 1.00-2.00 sec 280 MBytes 2.35 Gbits/sec 3 891 KBytes
[ 5] 2.00-3.00 sec 281 MBytes 2.36 Gbits/sec 0 976 KBytes
[ 5] 3.00-4.00 sec 280 MBytes 2.35 Gbits/sec 0 1001 KBytes
[ 5] 4.00-5.00 sec 281 MBytes 2.36 Gbits/sec 4 1007 KBytes
[ 5] 5.00-6.00 sec 280 MBytes 2.35 Gbits/sec 0 1010 KBytes
[ 5] 6.00-7.00 sec 281 MBytes 2.36 Gbits/sec 0 1014 KBytes
[ 5] 7.00-8.00 sec 280 MBytes 2.35 Gbits/sec 0 1020 KBytes
[ 5] 8.00-9.00 sec 281 MBytes 2.36 Gbits/sec 0 1.01 MBytes
[ 5] 9.00-10.00 sec 280 MBytes 2.35 Gbits/sec 0 1.05 MBytes
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[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec 21 sender
[ 5] 0.00-10.01 sec 2.74 GBytes 2.35 Gbits/sec receiver
Reverse mode, remote host lcars is sending
[ 5] local 192.168.1.50 port 40742 connected to 192.168.1.253 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 279 MBytes 2.34 Gbits/sec
[ 5] 1.00-2.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 2.00-3.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 3.00-4.00 sec 280 MBytes 2.35 Gbits/sec
[ 5] 4.00-5.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 5.00-6.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 6.00-7.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 7.00-8.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 8.00-9.00 sec 281 MBytes 2.35 Gbits/sec
[ 5] 9.00-10.00 sec 281 MBytes 2.35 Gbits/sec
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[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.74 GBytes 2.36 Gbits/sec 0 sender
[ 5] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec receiver
Presumably this new driver will fix those issues.
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Originally posted by Alex Atkin UK View Post
The Realtek 8156 2.5Gbit USB adapter has worked using the generic USB NIC driver since they dropped support for their official driver.
The catch is it used to blast syslog with link up messages and you can't change the MTU or use VLANs.
cdc_ncm 2-2:2.0 enp0s20f0u2c2: 2500 mbit/s downlink 2500 mbit/s uplink
[...]
Presumably this new driver will fix those issues.
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Originally posted by numacross View Post
If I understood you correctly you expect the iperf score to be equal to line rate of 2500 MBit/s? It will never do it due to what iperf is actually measuring. Unless you adjust the MTU, but even then it will be close, but not exactly the line rate.
To measure the actual line rate you can monitor the interface itself or if you have a managed switch monitor the traffic going across the port.
The MTU makes a marginal difference if both ends of the link have a fast CPU so can process the packets fast enough.
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