Hey,
im running the newest stable version of dietPi on my Odroid Xu4.
My Windows pc and the odroid are connected with 1Gbit Lan.
Connecting to the odroid with SFTP, my upload speed from windows → odroid is only 10-12m/s and download is also 10-12mb/s.
Any adwise how to find the problem ?
Cheers
Lars
Do you connect directly to the local IP or do you use some sort of DDNS and maybe it’s getting routed through the internet?
Direct connect over ip.
Also tested the hardware:
root@DietPi:~# hdparm -T /dev/mmcblk0p1
/dev/mmcblk0p1:
Timing cached reads: 1520 MB in 2.00 seconds = 760.46 MB/sec
root@DietPi:~# hdparm -T /dev/sda1
/dev/sda1:
Timing cached reads: 1606 MB in 2.00 seconds = 803.81 MB/sec
root@DietPi:~# ^C
root@DietPi:~# sync; dd if=/dev/sda1 of=tempfile bs=1M count=1024; sync
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 20.7815 s, 51.7 MB/s
root@DietPi:~# sync; dd if=/dev/mmcblk0p1 of=tempfile bs=1M count=1024; sync
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 30.3535 s, 35.4 MB/s
traceroute Linux → Windows
traceroute to 192.168.178.20 (192.168.178.20), 30 hops max, 60 byte packets
1 DESKTOP-MyPc.fritz.box (192.168.178.20) 1.233 ms 0.721 ms 1.054 ms
traceroute windows → Linux
Routenverfolgung zu DietPi.fritz.box [192.168.178.69]
über maximal 30 Hops:
1 1 ms <1 ms 1 ms DietPi.fritz.box [192.168.178.69]
Iperf3 Test
Accepted connection from 192.168.178.20, port 61718
[ 5] local 192.168.178.69 port 5201 connected to 192.168.178.20 port 61719
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 10.5 MBytes 88.3 Mbits/sec
[ 5] 1.00-2.00 sec 11.2 MBytes 94.2 Mbits/sec
[ 5] 2.00-3.00 sec 11.3 MBytes 94.4 Mbits/sec
[ 5] 3.00-4.00 sec 11.2 MBytes 94.1 Mbits/sec
[ 5] 4.00-5.00 sec 10.8 MBytes 90.6 Mbits/sec
[ 5] 5.00-6.00 sec 10.8 MBytes 90.8 Mbits/sec
[ 5] 6.00-7.02 sec 9.40 MBytes 77.7 Mbits/sec
[ 5] 7.02-8.00 sec 10.1 MBytes 86.3 Mbits/sec
[ 5] 8.00-9.00 sec 9.87 MBytes 82.8 Mbits/sec
[ 5] 9.00-10.00 sec 11.3 MBytes 95.0 Mbits/sec
[ 5] 10.00-10.06 sec 674 KBytes 94.1 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.06 sec 107 MBytes 89.4 Mbits/sec receiver
settings of eth0
Settings for eth0:
Supported ports: [ TP MII ]
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: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 32
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00007fff (32767)
drv probe link timer ifdown ifup rx_err tx_err tx_queued intr tx_done rx_status pktdata hw wol
Link detected: yes
Smth with network must be wrong
Okay i can answer this by myself. The LAN cable of my Windows → switch was broken, i only changed the one from XU4 → switch. Now on my windows pc the led is orange and green, on the broken cable it was orange and smth like red.
So it was only running at 100Mbit instead of 1000 
Another point to consider:
The IRQ for xhci-hcd:usb5 to which the LAN-device is connected is assigned to CPU core 0 - which is a slow little-core. (see: cat /proc/interrupts)
You will gain significant performance boost by assigning it to one of the BIG-cores (4-7).
For me this made a difference about 150Mbit/s for transfers from PC to XU4/HC1/HC2/MC1 and about 100Mbit/s vice versa.
Before:
$ iperf -c odroidxu4 -i5 -t30
------------------------------------------------------------
Client connecting to odroidxu4, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 1] local 192.168.###.201 port 43546 connected with 192.168.###.203 port 5001 (icwnd/mss/irtt=14/1448/915)
[ ID] Interval Transfer Bandwidth
[ 1] 0.0000-5.0000 sec 423 MBytes 709 Mbits/sec
[ 1] 5.0000-10.0000 sec 456 MBytes 765 Mbits/sec
[ 1] 10.0000-15.0000 sec 472 MBytes 791 Mbits/sec
[ 1] 15.0000-20.0000 sec 458 MBytes 768 Mbits/sec
[ 1] 20.0000-25.0000 sec 468 MBytes 786 Mbits/sec
[ 1] 25.0000-30.0000 sec 465 MBytes 780 Mbits/sec
[ 1] 0.0000-30.0438 sec 2.68 GBytes 766 Mbits/sec
After:
$ iperf -c odroidxu4 -i5 -t30
------------------------------------------------------------
Client connecting to odroidxu4, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 1] local 192.168.###.201 port 58502 connected with 192.168.###.203 port 5001 (icwnd/mss/irtt=14/1448/863)
[ ID] Interval Transfer Bandwidth
[ 1] 0.0000-5.0000 sec 552 MBytes 926 Mbits/sec
[ 1] 5.0000-10.0000 sec 557 MBytes 935 Mbits/sec
[ 1] 10.0000-15.0000 sec 557 MBytes 934 Mbits/sec
[ 1] 15.0000-20.0000 sec 557 MBytes 935 Mbits/sec
[ 1] 20.0000-25.0000 sec 558 MBytes 935 Mbits/sec
[ 1] 25.0000-30.0000 sec 557 MBytes 934 Mbits/sec
[ 1] 0.0000-30.0347 sec 3.26 GBytes 932 Mbits/sec