最近将我的家庭服务器切换到Ubuntu 20.04 LTS。我是Linux的新手，但是我几乎可以启动并运行所有东西。
但是，我面临着有关LAN传输速度的奇怪问题。这是iper3的摘录
$ iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.2.114, port 35492
[ 5] local 192.168.2.150 port 5201 connected to 192.168.2.114 port 35494
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 70.2 MBytes 589 Mbits/sec 0 574 KBytes
[ 5] 1.00-2.00 sec 70.9 MBytes 595 Mbits/sec 0 660 KBytes
[ 5] 2.00-3.00 sec 70.0 MBytes 587 Mbits/sec 0 724 KBytes
[ 5] 3.00-4.00 sec 70.0 MBytes 587 Mbits/sec 0 724 KBytes
[ 5] 4.00-5.00 sec 68.8 MBytes 577 Mbits/sec 0 800 KBytes
[ 5] 5.00-6.00 sec 70.0 MBytes 587 Mbits/sec 0 885 KBytes
[ 5] 6.00-7.00 sec 70.0 MBytes 587 Mbits/sec 0 885 KBytes
[ 5] 7.00-8.00 sec 70.0 MBytes 587 Mbits/sec 0 885 KBytes
[ 5] 8.00-9.00 sec 70.0 MBytes 587 Mbits/sec 0 885 KBytes
[ 5] 9.00-10.00 sec 70.0 MBytes 587 Mbits/sec 0 974 KBytes
[ 5] 10.00-10.03 sec 2.50 MBytes 603 Mbits/sec 0 974 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.03 sec 702 MBytes 587 Mbits/sec 0 sender
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.2.114, port 35534
[ 5] local 192.168.2.150 port 5201 connected to 192.168.2.114 port 35536
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 107 MBytes 901 Mbits/sec
[ 5] 1.00-2.00 sec 111 MBytes 931 Mbits/sec
[ 5] 2.00-3.00 sec 110 MBytes 926 Mbits/sec
[ 5] 3.00-4.00 sec 111 MBytes 929 Mbits/sec
[ 5] 4.00-5.00 sec 111 MBytes 929 Mbits/sec
[ 5] 5.00-6.00 sec 111 MBytes 929 Mbits/sec
[ 5] 6.00-7.00 sec 111 MBytes 929 Mbits/sec
[ 5] 7.00-8.00 sec 111 MBytes 932 Mbits/sec
[ 5] 8.00-9.00 sec 111 MBytes 933 Mbits/sec
[ 5] 9.00-10.00 sec 112 MBytes 939 Mbits/sec
[ 5] 10.00-10.05 sec 4.43 MBytes 727 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.05 sec 1.08 GBytes 927 Mbits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
和lspci -v
sudo lspci -v
0c:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5761 Gigabit Ethernet PCIe (rev 10)
Subsystem: Dell NetXtreme BCM5761 Gigabit Ethernet PCIe
Flags: bus master, fast devsel, latency 0, IRQ 38
Memory at f7c10000 (64-bit, non-prefetchable) [size=64K]
Memory at f7c00000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [48] Power Management version 3
Capabilities: [40] Vital Product Data
Capabilities: [60] Vendor Specific Information: Len=6c <?>
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [cc] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
Capabilities: [160] Device Serial Number f0-1f-af-ff-fe-36-25-22
Capabilities: [16c] Power Budgeting <?>
Kernel driver in use: tg3
Kernel modules: tg3
sudo lspci
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 4 (rev c4)
00:1c.5 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6 (rev c4)
00:1c.6 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 7 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM77 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus Controller (rev 04)
02:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)
0b:00.0 SD Host controller: O2 Micro, Inc. OZ600FJ0/OZ900FJ0/OZ600FJS SD/MMC Card Reader Controller (rev 05)
0c:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5761 Gigabit Ethernet PCIe (rev 10)
$ sudo lshw -c network
*-network
description: Ethernet interface
product: NetXtreme BCM5761 Gigabit Ethernet PCIe
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:0c:00.0
logical name: enp12s0
version: 10
serial: f0:1f:af:36:25:22
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=5761-v3.80 ip=192.168.2.150 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:38 memory:f7c10000-f7c1ffff memory:f7c00000-f7c0ffff
$ ethtool enp12s0
Settings for enp12s0:
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
Cannot get wake-on-lan settings: Operation not permitted
Current message level: 0x000000ff (255)
drv probe link timer ifdown ifup rx_err tx_err
Link detected: yes
我也尝试过从Samba Shares复制，但它限制为75MB / s或600Mb / s。 当我使用Windows 10时，iperf和LAN传输的上/下速度都能达到900Mb / s +。
任何帮助将不胜感激！ 戴尔E5430笔记本电脑
