Open phires opened 1 year ago
On Amazon users saying that this adapter is getting hot? True?
I'm running it in my basement, where it is not warm at all. The adapter is pretty cold, not even hand-warm. But - and I'm not yet sure, if it is my cable installation or the adapter - I'm only getting about 1.4 Gbps with iperf3:
$ iperf3 -c 192.168.1.200
Connecting to host 192.168.1.200, port 5201
[ 5] local 192.168.1.47 port 58942 connected to 192.168.1.200 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 181 MBytes 1.52 Gbits/sec 912 133 KBytes
[ 5] 1.00-2.00 sec 172 MBytes 1.45 Gbits/sec 784 130 KBytes
[ 5] 2.00-3.00 sec 172 MBytes 1.45 Gbits/sec 946 117 KBytes
[ 5] 3.00-4.00 sec 174 MBytes 1.46 Gbits/sec 804 141 KBytes
[ 5] 4.00-5.00 sec 175 MBytes 1.47 Gbits/sec 898 143 KBytes
[ 5] 5.00-6.00 sec 164 MBytes 1.37 Gbits/sec 908 107 KBytes
[ 5] 6.00-7.00 sec 174 MBytes 1.46 Gbits/sec 980 113 KBytes
[ 5] 7.00-8.00 sec 169 MBytes 1.42 Gbits/sec 993 136 KBytes
[ 5] 8.00-9.00 sec 162 MBytes 1.36 Gbits/sec 834 106 KBytes
[ 5] 9.00-10.00 sec 170 MBytes 1.43 Gbits/sec 898 133 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.67 GBytes 1.44 Gbits/sec 8957 sender
[ 5] 0.00-10.00 sec 1.67 GBytes 1.43 Gbits/sec receiver
I will investigate further.
Mmm ... the speed should be higher ...
From looking at the iperf results, it appears that a lot of retransmissions are occurring. (see the Retr
column in the results).
It could be a MTU configuration issue or a physical layer issue such as a cable.
Yes, my cabeling is sub-par. Won't be able to change anything about this currently. But the adapter is still working well.
I had to put 2.5gb USB NIC to the front USB port of my DS716+II.
Ethernet device: Diewu RTL815B (manufactured date 2020) Working status: Worked.
Speed test software: OpenSpeedTest - on Docker Setting: DS716+II (16GB RAM with 3.5" 4TB *2, Jumbo Frame MTU: 9000) <<<===>>> Diewu RTL815B <<<== direct RJ-45 cable connection ==>>> Diewu RTL815B <<<===>>> PC (Jumbo frame: 9014)
Download: 2,073.4 Mbps Upload: 2,429.9 Mbps PING: 3ms JITTER: 0.2ms
Description of the problem
Works on my DS716+II with ULT-WIIQ USB 2.5Gb (Rear USB)
Description of your products
uname -a
:Linux synology 3.10.108 #42962 SMP Fri Mar 24 12:30:20 CST 2023 x86_64 GNU/Linux synology_braswell_716+II
Description of your environment
Dongle is connected to the Back USB port. Network connection using a CAT6a cable to a Zyxel XGS1250-12 syncs with 2.5 Gbps.