Download normal, upload super slow after Update

[Macropodux]

Hello guys,

I recently updated to Freenas 11.2 U6 and installed the Plex app afterwards, since it didn't work after the update. I also defined the nameserver and the gateway so that I could access the Plex server via the web browser.

Shortly after I recognized, that my upload speed to the windows shares of ther sever where super slow and I had a look at the task manager: the connection consists of spices only (see attached image), which go up to about 1 Gbps and down to 0 - the average write speed is about 10 Mbps.
Still, my download speed seems to be stable at high speeds (about 280MB/s, limited by my Windows SSD).
Berforehand I didn't have any trouble with speed whatsoever, write speeds even where as high as 500MB/s. And the issue isn't only from one computer, but also from my other devices - so I assume the issue lies in my server.
Also, if I copy a file from one share to another, the speed is also very high (about 350 MB/s), so it has to do with my network configuration I guess.

I would be super thankful if you guys could help me out. If you need more informations, I'll be happy to proved as much as I can!

Best regards,

Josh

PS: My system specifications are
Intel Pentium CPU G4560 @ 3.50GHz (4 cores)
24 GB of DDR4 RAM
Mellanox 10GBit NIC (direct connection to my workstation)
1 TB Samsung Evo M.2 SSD
15 TB Stripe with 3 harddrives (not the best, but that's what I have..)
Gigabyte Mini-ATX Mainboard

 

[Macropodux]

That's my ifconfig code, if it helps:

Code:

% ifconfig
em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=2098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 1c:1b:0d:7f:59:a4
        hwaddr 1c:1b:0d:7f:59:a4
        inet 192.168.0.92 netmask 0xffffff00 broadcast 192.168.0.255
        inet6 fe80::1e1b:dff:fe7f:59a4%em0 prefixlen 64 scopeid 0x1
        inet6 XXXX:XXXX:XXXX:XXXX:1e1b:dff:fe7f:59a4 prefixlen 64 autoconf
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
        inet 127.0.0.1 netmask 0xff000000
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        groups: lo
mlxen0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
        options=ed07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 00:02:c9:4f:fc:10
        hwaddr 00:02:c9:4f:fc:10
        inet 10.10.10.2 netmask 0xffffff00 broadcast 10.10.10.255
        nd6 options=9<PERFORMNUD,IFDISABLED>
        media: Ethernet autoselect (10Gbase-SR <full-duplex,rxpause,txpause>)
        status: active
mlxen2: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=ed07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
        ether 00:02:c9:4f:fc:14
        hwaddr 00:02:c9:4f:fc:14
        nd6 options=9<PERFORMNUD,IFDISABLED>
        media: Ethernet autoselect
        status: no carrier
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 02:36:e5:06:df:00
        nd6 options=1<PERFORMNUD>
        groups: bridge
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        member: vnet0:1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 6 priority 128 path cost 2000
        member: em0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 1 priority 128 path cost 20000
vnet0:1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        description: associated with jail: plex as nic: epair0b
        options=8<VLAN_MTU>
        ether 1c:1b:0d:14:fa:09
        hwaddr 02:a0:d0:00:06:0a
        nd6 options=1<PERFORMNUD>
        media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
        status: active
        groups: epair

 

[Macropodux]

I really would appreciate some kind of help, if anybody has any idea.

Best regards

 

[dlavigne]

It might be a routing issue as you have 2 different internal networks defined.

 

[Macropodux]

Okay thanks, good to know! Although I never had any with the network configuration issues in the last 12 months or so.. but maybe something has changed with a update?
Do you know how I could figure that out?

 

[dlavigne]

Running a packet sniffer while reproducing the issue should show where the packets are getting slowed down.