Support for DS916+ - Githubissues

Description of the problem

There are several issues:

The adapter crashes when MTU is changed. A manual "/etc/rc.network restart" is required to revive the adapter. This comes without dmesg output or changes in lsusb/ifconfig. Afterwards the MTU settings are updated as requested.
As reported in Issue #7 the network connection crashes after a short data transfer. It is stable when sending data, even for large amounts of data (>50GB). It is very unstable when receiving data (SMB). Most of the time it crashes within the first 10s. Even Iperf traffic may provoke a crash in some situations. Fixed by using the front USB port.
Overall transfer rates are never as expected. 3650MBps(Tx)/3520MBps(Rx) is the upper limit measured with iperf. In SMB setups, Rx is always about 30% slower (3300MBps(Tx)/2100MBps(Rx))

Please have a look into the remaining two issues: Crash upon MTU change and low SMB write rates

Performance/Stability table

For Issue 2 and 3 I tried several combinations of link speed, MTU, Throttling and remote station. The interfaces are described in more detail in the following sections.

NAS interface	Remote interface	Link Speed	MTU	Throttling	Used USB Port	Iperf Tx	Iperf Rx	SMB Tx	SMB Rx
QNA	Intel	1G	9000	Yes	4	946	947	950	950
Synology	Aquantia	1G	1500	-	-	946	947	940	940
QNA	Aquantia	5G	9000	Yes	4	1560	2040	1490	Crash
QNA	Aquantia	2.5G	9000	Yes	4	1570	2050	2270	Crash
QNA	Aquantia	5G	1500	Yes	4	1560	Crash	Crash	Crash
QNA	Aquantia	2.5G	1500	Yes	4	1570	1720	1310	Crash
QNA	Aquantia	5G	1500	No	4	1560	Crash	1530	Crash
QNA	Aquantia	2.5G	1500	No	4	1530	Crash	1540	Crash
QNA	Aquantia	5G	1500	Yes	2	3400	1500	1300	650
QNA	Aquantia	5G	1500	No	2	2890	1780	1300	650
QNA	Aquantia	2.5G	1500	Yes	2	2350	1800	1300	550
QNA	Aquantia	2.5G	1500	No	2	2360	1770	1300	550
QNA	Aquantia	2.5G	9000	Yes	2	2450	2470	2500	1800
QNA	Aquantia	5G	9000	Yes	2	3640	3510	3300	2100
QNA	Aquantia	2.5G	1500	Yes	2	2360	2140	1300	550
QNA	Aquantia	5G	1500	Yes	2	3400	1740	1300	700
QNA	Aquantia	2.5G	9000	Yes	2	2470	2460	2200	1800
QNA	Aquantia	5G	9000	Yes	2	3650	3520	3300	2100
QNA	Aquantia	2.5G	1500	Yes	3+4	1530	Crash	-	-
QNA	Aquantia	5G	1500	Yes	3+4	1540	Crash	1300	Crash
QNA	Aquantia	2.5G	9000	Yes	3+4	1580	2050	1500	1600
QNA	Aquantia	5G	9000	Yes	3+4	1560	2050	1450	1600

Notes:

All data rates are in MBps and given relative to NAS.
Iperf3 was used for Iperf measurements. The remote station was always the server. Rx traffic was forced with "-R" flag. All measurements used seven parallel streams. Single streams runs are 200-300MBit/s slower. Native iperf3 was used.
SMB test was performed by copying an 8GiB file from NAS to remote station (Tx) and back (Rx).
~~Before Crashing on SMB transfers the transfer rates were approx. on Tx speed level.~~
The settings "USB Port 3+4" used a USB Y-cable to eradicate power issues. Port 4 was used for data and port 3 for supplementary power.

Outcome:

Thermal throttling does not affect the performance or stability as far as I can tell. May be this is due to the small files (<10GB) transmitted for testing.
The used network cable does not affect the performance or stability as far as I can tell. Tests with an old 10m Cat5e didn't yield other results than with a new 10m Cat6 cable.
The front USB port is much more reliable and performs much better. (Nevertheless it still has a problem with SMB RX traffic.)
The rear USB ports can't handle the adapter. Performance is bad and stability is even worse.

Description of your products

NAS

NAS is a DS916+ with 3 WD140PURZ and 1 WD80EFZX in RAID5.

uname -a : Linux DS916 3.10.105 #24922 SMP Wed Jul 3 16:34:56 CST 2019 x86_64 GNU/Linux synology_braswell_916+
DSM 6.2.2-24922 Update 4

Network Adapter

QNAP QNA-UC5G1T USB to 5GbE Adapter - QNAP System Inc.

Rev: 1.01 (as said by DSM USB device information)
Connected with the original USB-C USB-A cable.
Connected to the upper rear(4)/front(2) USB port.
An USB3-Y-cable was temporarily used.

Content of /etc/sysconfig/network-scripts/ifcfg-eth2: (touched by myself, configured via DSM)

DEVICE=eth2
BOOTPROTO=static
IPADDR=192.168.70.100
NETMASK=255.255.255.0
ONBOOT=yes
IPV6INIT=auto
IPV6_ACCEPT_RA=1

Description of your environment

NAS and remote station were connected directly. No Hubs or Switches.

Intel: Intel(R) I211 Gigabit Network Connection
Aquantia: Aquantia AQtion 10Gbit Network Adapter (AQC107) Both onboard on an ASRock X470 Taichi Ultimate. System is running Win10 (1809).

A 10m STP Cat.5e and a 10, SFTP Cat.6 cable were used for all test.

Output of `dmesg` command

There is no output after the cable was connected after 42000. dmesg.txt This is an exemplary output of one of the tests.

Output of `lsusb` command

Output when Adapter was attached at the rear port.

|__usb1          1d6b:0002:0310 09  2.00  480MBit/s 0mA 1IF  (xhci_hcd 0000:00:14.0) hub
  |__1-5         f400:f400:0100 00  2.00  480MBit/s 200mA 1IF  (Synology DiskStation 650064DA20E41658)
|__usb2          1d6b:0003:0310 09  3.00 5000MBit/s 0mA 1IF  (xhci_hcd 0000:00:14.0) hub
|__usb3          1d6b:0002:0310 09  2.00  480MBit/s 0mA 1IF  (Linux 3.10.105 etxhci_hcd-170202 Etron xHCI Host Controller 0000:04:00.0) hub
|__usb4          1d6b:0003:0310 09  3.00 5000MBit/s 0mA 1IF  (Linux 3.10.105 etxhci_hcd-170202 Etron xHCI Host Controller 0000:04:00.0) hub
  |__4-2         1c04:0015:0101 00  3.20 5000MBit/s 896mA 1IF  (QNAP QNAP QNA-UC5G1T USB to 5GbE Adapter 02I08329)

Output when Adapter was attached at the front port.

|__usb1          1d6b:0002:0310 09  2.00  480MBit/s 0mA 1IF  (xhci_hcd 0000:00:14.0) hub
  |__1-5         f400:f400:0100 00  2.00  480MBit/s 200mA 1IF  (Synology DiskStation 650064DA20E41658)
|__usb2          1d6b:0003:0310 09  3.00 5000MBit/s 0mA 1IF  (xhci_hcd 0000:00:14.0) hub
  |__2-2         1c04:0015:0101 00  3.20 5000MBit/s 896mA 1IF  (QNAP QNAP QNA-UC5G1T USB to 5GbE Adapter 02I08329)
|__usb3          1d6b:0002:0310 09  2.00  480MBit/s 0mA 1IF  (Linux 3.10.105 etxhci_hcd-170202 Etron xHCI Host Controller 0000:04:00.0) hub
|__usb4          1d6b:0003:0310 09  3.00 5000MBit/s 0mA 1IF  (Linux 3.10.105 etxhci_hcd-170202 Etron xHCI Host Controller 0000:04:00.0) hub

Output of `ifconfig -a` command

eth0      Link encap:Ethernet  HWaddr 00:11:32:5D:03:B9
          inet addr:192.168.60.10  Bcast:192.168.60.255  Mask:255.255.255.0
          inet6 addr: fe80::211:32ff:fe5d:3b9/64 Scope:Link
          inet6 addr: 2003:cd:770d:a300:211:32ff:fe5d:3b9/64 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:21019885 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13627187 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:27761844139 (25.8 GiB)  TX bytes:5625192053 (5.2 GiB)

eth1      Link encap:Ethernet  HWaddr 00:11:32:5D:03:BA
          inet addr:169.254.7.239  Bcast:169.254.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth2      Link encap:Ethernet  HWaddr 24:5E:BE:4D:99:D9
          inet addr:192.168.70.100  Bcast:192.168.70.255  Mask:255.255.255.0
          inet6 addr: fe80::265e:beff:fe4d:99d9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3009123 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3032428929 (2.8 GiB)  TX bytes:14303703448 (13.3 GiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:230267 errors:0 dropped:0 overruns:0 frame:0
          TX packets:230267 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:70866766 (67.5 MiB)  TX bytes:70866766 (67.5 MiB)

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

Output of `ethtool`

The missing link mode adverstisement for 2.5G and 5G seems odd to me.

Settings for eth2:
        Supported ports: [ TP MII ]
        Supported link modes:   100baseT/Full
                                1000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  100baseT/Full
                                1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Speed: 5000Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        Supports Wake-on: g
        Wake-on: d
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes

bb-qq / aqc111

Support for DS916+ #12

Description of the problem

Performance/Stability table

Description of your products

NAS

Network Adapter

Description of your environment

Output of `dmesg` command

Output of `lsusb` command

Output of `ifconfig -a` command

Output of `ethtool`

bb-qq / aqc111

Support for DS916+ #12

Description of the problem

Performance/Stability table

Description of your products

NAS

Network Adapter

Description of your environment

Output of dmesg command

Output of lsusb command

Output of ifconfig -a command

Output of ethtool

Output of `dmesg` command

Output of `lsusb` command

Output of `ifconfig -a` command

Output of `ethtool`