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    [solved] pfSense (2.6.0 & 22.01 ) is very slow on Hyper-V

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    • Bob.DigB
      Bob.Dig LAYER 8 @m0nji
      last edited by Bob.Dig

      @m0nji I tried this with 2.5.2. I don't see anything regarding rsc in the logs or OS Boot log.
      Also where to put those commands in? If I try with putty, it gives my permission denied. In the WebUI there is no output as well.

      So I guess not noob friendly enough. 😓

      
Enter an option: 8

[2.5.2-RELEASE][admin@pfSense.home.arpa]/root: # grep -i "rsc" /var/log/messages                                      
#: Command not found.
[2.5.2-RELEASE][admin@pfSense.home.arpa]/root: grep -i "rsc" /var/log/system.log                                      
[2.5.2-RELEASE][admin@pfSense.home.arpa]/root: ~ # grep -i "rsc" /var/log/messages
/root: Permission denied.
[2.5.2-RELEASE][admin@pfSense.home.arpa]/root:
      m0njiM 1 Reply Last reply Reply Quote 0
      • m0njiM
        m0nji @Bob.Dig
        last edited by

        @bob-dig i think your output is correct. you should not see anything RSC related on pfSense 2.5.x

        This is what @stephenw10 said:
        "RSC support wasn't added to hn(4) until 12.3 so I would expect to see no sysctls there."

        Intel i3-N305 / 4 x 2.5Gbe LAN @2.7.2-Release
        WAN: Vodafone 1000/50, Telekom 250/40; Switch: USW Enterprise 8 PoE, USW Flex XG, US-8-60W; Wifi: Unifi 6 Lite AP, U6 Mesh

        Bob.DigB 1 Reply Last reply Reply Quote 1
        • Bob.DigB
          Bob.Dig LAYER 8 @m0nji
          last edited by Bob.Dig

          This post is deleted!
          m0njiM 1 Reply Last reply Reply Quote 0
          • m0njiM
            m0nji @Bob.Dig
            last edited by m0nji

            @bob-dig you missed a "."
            2a56818d-af59-4334-a94b-62baab96adfe-image.png

            hn.0 is probably the wan interface. you should also try hn.1, hn.2 and hn.3

            EDIT: you already fixed your post ;) try it also for hn1, hn2 and hn3. it depends which hn adapter you use

            EDIT2: if i understood it correctly, then none hn adapter should give you a value >0 if RSC is disabled. if it tells you a value >0 then the setting RSC disabled does not realy work

            Intel i3-N305 / 4 x 2.5Gbe LAN @2.7.2-Release
            WAN: Vodafone 1000/50, Telekom 250/40; Switch: USW Enterprise 8 PoE, USW Flex XG, US-8-60W; Wifi: Unifi 6 Lite AP, U6 Mesh

            Bob.DigB 1 Reply Last reply Reply Quote 1
            • Bob.DigB
              Bob.Dig LAYER 8 @m0nji
              last edited by Bob.Dig

              2.6:

              SoftwareRscEnabled RscOffloadEnabled
------------------ -----------------
             False             False
             False             False
             False             False

              grep -i "rsc" /var/log/system.log

              Feb 25 13:18:24 pfSense kernel: hn0: hwcaps rsc: ip4 1 ip6 1
Feb 25 13:18:24 pfSense kernel: hn0: offload rsc: ip4 2, ip6 2
Feb 25 13:18:24 pfSense kernel: hn1: hwcaps rsc: ip4 1 ip6 1
Feb 25 13:18:24 pfSense kernel: hn1: offload rsc: ip4 2, ip6 2
Feb 25 13:18:24 pfSense kernel: hn2: hwcaps rsc: ip4 1 ip6 1
Feb 25 13:18:24 pfSense kernel: hn2: offload rsc: ip4 2, ip6 2

              While "copying":

              sysctl dev.hn.1.rx.0.rsc_drop
sysctl dev.hn.1.rx.0.rsc_pkts
sysctl dev.hn.2.rx.0.rsc_drop
sysctl dev.hn.2.rx.0.rsc_pkts

              [2.6.0-RELEASE][root@pfSense.home.arpa]/root: sysctl dev.hn.1.rx.0.rsc_drop
dev.hn.1.rx.0.rsc_drop: 0
[2.6.0-RELEASE][root@pfSense.home.arpa]/root: sysctl dev.hn.1.rx.0.rsc_pkts
dev.hn.1.rx.0.rsc_pkts: 0
[2.6.0-RELEASE][root@pfSense.home.arpa]/root: sysctl dev.hn.2.rx.0.rsc_drop
dev.hn.2.rx.0.rsc_drop: 0
[2.6.0-RELEASE][root@pfSense.home.arpa]/root: sysctl dev.hn.2.rx.0.rsc_pkts
dev.hn.2.rx.0.rsc_pkts: 107

              The last number constantly rises.

              Everything stays the same for me if I re-enable rsc in Windows, no difference at all.

              SoftwareRscEnabled RscOffloadEnabled
------------------ -----------------
              True             False
              True             False
              True             False
              1 Reply Last reply Reply Quote 1
              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                Hmm, so just to be clear you are seeing the RSC packets counter increment whether or not you have disabled RSC on the vswitch that interface is connected to?

                That seems like a different result to those for whom disabling RSC solved the issue. And seems to support my conjecture... 🤔

                Unclear what we can do about it though if that is the case. Yet.

                Steve

                Bob.DigB 1 Reply Last reply Reply Quote 0
                • Bob.DigB
                  Bob.Dig LAYER 8 @stephenw10
                  last edited by

                  @stephenw10 said in After Upgrade inter (V)LAN communication is very slow (on Hyper-V).:

                  Hmm, so just to be clear you are seeing the RSC packets counter increment whether or not you have disabled RSC on the vswitch that interface is connected to?

                  True

                  Unclear what we can do about it though if that is the case. Yet.

                  I hope you guys figure it out.

                  1 Reply Last reply Reply Quote 0
                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    Ok, so we need more data points here to be sure it's actually what's happening.

                    But assuming that's true it appears:
                    There's an issue with the RSC code added in FreeBSD.
                    In some situations the vswitches in hyper-v do not respect the disable RSC setting.

                    Steve

                    1 Reply Last reply Reply Quote 0
                    • stephenw10S
                      stephenw10 Netgate Administrator
                      last edited by

                      Ok, so it looks like our European friends in fact already hit this because they are actually building on 13-stable and came to the same conclusions. I have opened a bug report: https://redmine.pfsense.org/issues/12873

                      Steve

                      1 Reply Last reply Reply Quote 1
                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        What do you guys see for these sysctls?:

                        dev.hn.0.hwassist: 607<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP6_UDP,CSUM_IP6_TCP>
dev.hn.0.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.0.ndis_version: 6.30
dev.hn.0.nvs_version: 393217

                        Please report whether or not you're hitting the issue with the values shown.

                        Bob.DigB m0njiM 2 Replies Last reply Reply Quote 0
                        • Bob.DigB
                          Bob.Dig LAYER 8 @stephenw10
                          last edited by Bob.Dig

                          @stephenw10 Hittin it hard

                          sysctl dev.hn.0.hwassist
sysctl dev.hn.0.caps
sysctl dev.hn.0.ndis_version
sysctl dev.hn.0.nvs_version

                          2.5.2
dev.hn.0.hwassist: 1617<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO,CSUM_IP6_UDP,CSUM_IP6_TCP,CSUM_IP6_TSO>
dev.hn.0.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.0.ndis_version: 6.30
dev.hn.0.nvs_version: 327680

2.6.0
dev.hn.0.hwassist: 607<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP6_UDP,CSUM_IP6_TCP>
dev.hn.0.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.0.ndis_version: 6.30
dev.hn.0.nvs_version: 393217

                          Although this time I haven't deactivated RSC in Windows Host.

                          1 Reply Last reply Reply Quote 1
                          • m0njiM
                            m0nji @stephenw10
                            last edited by

                            @stephenw10

                            RSC disabled on Hyper-V Host

                            PS C:\Users\m0nji\Downloads\iperf-3.1.3-win64\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.187.11 -R
Connecting to host 192.168.187.11, port 5201
Reverse mode, remote host 192.168.187.11 is sending
[  4] local 192.168.189.10 port 49995 connected to 192.168.187.11 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  55.6 KBytes   454 Kbits/sec
[  4]   1.00-2.01   sec  21.4 KBytes   174 Kbits/sec
[  4]   2.01-3.00   sec  21.4 KBytes   176 Kbits/sec
[  4]   3.00-4.00   sec  21.4 KBytes   175 Kbits/sec
[  4]   4.00-5.00   sec  17.1 KBytes   140 Kbits/sec
[  4]   5.00-6.00   sec  21.4 KBytes   175 Kbits/sec
[  4]   6.00-7.00   sec  21.4 KBytes   175 Kbits/sec
[  4]   7.00-8.01   sec  15.7 KBytes   128 Kbits/sec
[  4]   8.01-9.00   sec  20.0 KBytes   165 Kbits/sec
[  4]   9.00-10.00  sec  21.4 KBytes   175 Kbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   384 KBytes   314 Kbits/sec                  sender
[  4]   0.00-10.00  sec   237 KBytes   194 Kbits/sec                  receiver

iperf Done.

                            pfSense 2.6.0 (hitting the issue)

                            dev.hn.0.hwassist: 607<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP6_UDP,CSUM_IP6_TCP>
dev.hn.0.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.0.ndis_version: 6.30
dev.hn.0.nvs_version: 393217
dev.hn.1.hwassist: 607<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP6_UDP,CSUM_IP6_TCP>
dev.hn.1.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.1.ndis_version: 6.30
dev.hn.1.nvs_version: 393217
dev.hn.2.hwassist: 607<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP6_UDP,CSUM_IP6_TCP>
dev.hn.2.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.2.ndis_version: 6.30
dev.hn.2.nvs_version: 393217

                            for comparision FreeBSD 12.3 (hitting the issue)

                            dev.hn.0.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
dev.hn.0.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.0.ndis_version: 6.30
dev.hn.0.nvs_version: 393217
dev.hn.1.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
dev.hn.1.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.1.ndis_version: 6.30
dev.hn.1.nvs_version: 393217
dev.hn.2.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
dev.hn.2.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.2.ndis_version: 6.30
dev.hn.2.nvs_version: 393217

                            FreeBSD 13.0 (not hitting the issue but obviously not STABLE version)

                            dev.hn.0.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
dev.hn.0.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.0.ndis_version: 6.30
dev.hn.0.nvs_version: 327680
dev.hn.1.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
dev.hn.1.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.1.ndis_version: 6.30
dev.hn.1.nvs_version: 327680
dev.hn.2.hwassist: 17<CSUM_IP,CSUM_IP_UDP,CSUM_IP_TCP,CSUM_IP_TSO>
dev.hn.2.caps: 7ff<VLAN,MTU,IPCS,TCP4CS,TCP6CS,UDP4CS,UDP6CS,TSO4,TSO6,HASHVAL,UDPHASH>
dev.hn.2.ndis_version: 6.30
dev.hn.2.nvs_version: 327680

                            Intel i3-N305 / 4 x 2.5Gbe LAN @2.7.2-Release
                            WAN: Vodafone 1000/50, Telekom 250/40; Switch: USW Enterprise 8 PoE, USW Flex XG, US-8-60W; Wifi: Unifi 6 Lite AP, U6 Mesh

                            1 Reply Last reply Reply Quote 1
                            • Bob.DigB
                              Bob.Dig LAYER 8
                              last edited by Bob.Dig

                              I figured out an interim solution for me. I created two external Switches, one for pfSense and one for all the other VMs. With that it does work, no slow speed anymore. Drawback is, it is using one more port and everything goes through a physical Switch.

                              1 Reply Last reply Reply Quote 0
                              • stephenw10S
                                stephenw10 Netgate Administrator
                                last edited by

                                So that's no routing between VMs in the same host? That seems like it's what should trigger this.

                                Bob.DigB 1 Reply Last reply Reply Quote 0
                                • Bob.DigB
                                  Bob.Dig LAYER 8 @stephenw10
                                  last edited by Bob.Dig

                                  @stephenw10 I think the key point is that pfsense is not using the same vSwitch then the others. This is an untypical setup and no one with a right mind would do it like this, but I did. And it does work here. I think I simulated "having two (vm) hosts", where it is natural, that the VMs can't use the same vSwitch.

                                  1 Reply Last reply Reply Quote 1
                                  • Bob.DigB
                                    Bob.Dig LAYER 8
                                    last edited by

                                    It feels like coming home, finally. 🤗

                                    yeha.png

                                    Still hope for a real fix to that situation some have for the future.

                                    1 Reply Last reply Reply Quote 0
                                    • i386DXI
                                      i386DX
                                      last edited by 

                                      Set-VMSwitch -Name "*" -EnableSoftwareRsc $false

Get-VMNetworkAdapter -VMName "vmname" | Where-Object {$_.MacAddress -eq "yourmacaddress"} | Set-VMNetworkAdapter -RscEnabled $false

                                      Seems to have worked for restoring both my wan upload and inter vlan throughput. Is there any official guidance on this?

                                      m0njiM 1 Reply Last reply Reply Quote 3
                                      • N
                                        n1ck31 @DD
                                        last edited by

                                        @dd Did you downgrade without a reinstall? The one time I forgot to take a snapshot and now I'm left with dialup speeds on my 10G server.

                                        1 Reply Last reply Reply Quote 0
                                        • m0njiM
                                          m0nji @i386DX
                                          last edited by m0nji

                                          @i386dx said in After Upgrade inter (V)LAN communication is very slow (on Hyper-V).:

                                          damn this did the trick right now

                                          Get-VMNetworkAdapter -VMName "vmname" | Where-Object {$_.MacAddress -eq "yourmacaddress"} | Set-VMNetworkAdapter -RscEnabled $false

                                          we were just concentrating of disabling RSC on the vSwitch but there is also a variable for the VMs.
                                          so the workaround should be:

                                          1. disable RSC support on the vSwitch
                                          Set-VMSwitch -Name "vSwitchName" -SoftwareRscEnabled $false
                                          1. disable RSC support on the VM
                                          Get-VMNetworkAdapter -VMName "VMname" | Set-VMNetworkAdapter -RscEnabled $false

                                          one important side note: right now, you have to enable & disable RSC on the VM after every VM reboot even when the value is still $false!
                                          at least on my host...

                                          Intel i3-N305 / 4 x 2.5Gbe LAN @2.7.2-Release
                                          WAN: Vodafone 1000/50, Telekom 250/40; Switch: USW Enterprise 8 PoE, USW Flex XG, US-8-60W; Wifi: Unifi 6 Lite AP, U6 Mesh

                                          i386DXI 1 Reply Last reply Reply Quote 2
                                          • werterW werter referenced this topic on
                                          • i386DXI
                                            i386DX @m0nji
                                            last edited by

                                            @m0nji said in After Upgrade inter (V)LAN communication is very slow (on Hyper-V).:

                                            one important side note: right now, you have to enable & disable RSC on the VM after every VM reboot even when the value is still $false!
                                            at least on my host...

                                            Yes, same behaviour on my host too (Windows server 2022, gen2 vm, I350-T2 adapter, sr-iov unavailable, vmq disabled).
                                            In my case I could even leave -SoftwareRscEnabled enabled on the vswitches and just flip -RscEnabled on and off on the vm network adapter(s) to restore normal bandwidth.

                                            Unfortunately I'm not aware if there are ways to enforce nvs version 5 (327680) on the hn driver.

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