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

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    • m0njiM
      m0nji
      last edited by m0nji

      VMQ disabled on all VMs
      RSC disabled on Hyper-V Host

      PS C:\WINDOWS\system32> Get-VMSwitch -Name "Bridged_LAN" | Select-Object *RSC*
      
      SoftwareRscEnabled RscOffloadEnabled
      ------------------ -----------------
                   False             False
      

      fresh booted FreeBSD 12.3 after 120 seconds iperf test (with speed problems)

      dev.hn.0.rx.0.rsc_drop: 0
      dev.hn.1.rx.0.rsc_drop: 0
      dev.hn.2.rx.0.rsc_drop: 0
      dev.hn.2.rx.0.rsc_pkts: 0
      dev.hn.1.rx.0.rsc_pkts: 0
      dev.hn.0.rx.0.rsc_pkts: 321
      

      fresh booted FreeBSD 13.0 after 120s iperf test (speed problem does not exist)
      sysctl's do not exist!

      root@freebsd130:~ # sysctl dev.hn.0.rx.0.rsc_drop
      sysctl: unknown oid 'dev.hn.0.rx.0.rsc_drop'
      root@freebsd130:~ # sysctl dev.hn.1rx.0.rsc_drop
      sysctl: unknown oid 'dev.hn.1.rx.0.rsc_drop'
      root@freebsd130:~ # sysctl dev.hn.2rx.0.rsc_drop
      sysctl: unknown oid 'dev.hn.2.rx.0.rsc_drop'
      root@freebsd130:~ # sysctl dev.hn.0rx.0.rsc_pkts
      sysctl: unknown oid 'dev.hn.0.rx.0.rsc_pkts'
      root@freebsd130:~ # sysctl dev.hn.1rx.0.rsc_pkts
      sysctl: unknown oid 'dev.hn.1.rx.0.rsc_pkts'
      root@freebsd130:~ # sysctl dev.hn.2rx.0.rsc_pkts
      sysctl: unknown oid 'dev.hn.2.rx.0.rsc_pkts'
      

      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
      • H
        hendryjl @stephenw10
        last edited by

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

        It would be interesting to see if that varies for VMs that are still hitting issues even with RSC disabled.

        Shutdown, Disable RCS on virtual switches, Boot, Test (success), Check CTLs... results attached (all 0's - good).

        sysctls_rcsdisabled.txt

        Definitely two different issues.

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

          just a theory:

          on FreeBSD 13.0, RSC was removed completly from the kernel/system, thats why the sysctl's doesn't exist and so we do not have these problems?

          on FreeBSD 12.3, RSC can't be disabled completly under some circumstances (drivers, nic's), thats why some people do see these problems?

          if i interpret my values correctly, then even with RSC disabled, some packages hit RSC?! (321 packages) at least if "pkts" means packages ;)

          EDIT: i think i will test tomorrow FreeBSD 12.2 (pfsense 2.5.x) and will see if RSC makes a difference 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

          H stephenw10S 2 Replies Last reply Reply Quote 0
          • H
            hendryjl @m0nji
            last edited by

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

            EDIT: i think i will test tomorrow FreeBSD 12.2 (pfsense 2.5.x) and will see if RSC makes a difference there

            I still have my image of 2.5.2 before I applied 2.6. I reverted to it when I first had my issues (before I ever tried disabling RSC on the Hyper-V virtual switches). I didn't see any issues. Later tonight I will revert to it again and see what the sysctls say.

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

              RSC support wasn't added to hn(4) until 12.3 so I would expect to see no sysctls there.

              The driver looks to try to use them based on the VNIC revision. I'm speculating that under some set of circumstances the driver/host/platform maybe trying and failing to use RSC even when it's disabled in the vswitch.

              I'd like to check the sysctl and verbose boot logs from someone who is hitting this still with rsc seemingly disabled. Since we know they should be all zeros if it's actually disabled.

              Steve

              Bob.DigB 1 Reply Last reply Reply Quote 0
              • stephenw10S
                stephenw10 Netgate Administrator @m0nji
                last edited by stephenw10

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

                on FreeBSD 13.0, RSC was removed completly from the kernel/system, thats why the sysctl's doesn't exist and so we do not have these problems?

                Ah, nope! It's because FreeBSD 13 is actually older than 12.3 and doesn't have any of the RSC support patches:
                https://github.com/freebsd/freebsd-src/tree/releng/13.0/sys/dev/hyperv/netvsc

                I would expect an 13-stable snapshot to fail the same way.

                Steve

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

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

                  I'd like to check the sysctl and verbose boot logs from someone who is hitting this still with rsc seemingly disabled. Since we know they should be all zeros if it's actually disabled.

                  Steve

                  I would like to but I need description for dummies how to do it.

                  m0njiM 1 Reply Last reply Reply Quote 0
                  • m0njiM
                    m0nji @Bob.Dig
                    last edited by m0nji

                    @bob-dig just open the VM preview window, reboot and on the boot screen hit the "boot options" and select verbose boot

                    63e6e7d6-391f-42f5-b3ba-d3c8cde56986-image.png

                    FreeBSD 12.3

                    root@freebsd123:~ # grep -i "rsc" /var/log/messages
                    Feb 25 08:48:02 freebsd123 kernel: hn0: hwcaps rsc: ip4 1 ip6 1
                    Feb 25 08:48:02 freebsd123 kernel: hn0: offload rsc: ip4 2, ip6 2
                    Feb 25 08:48:02 freebsd123 kernel: hn1: hwcaps rsc: ip4 1 ip6 1
                    Feb 25 08:48:02 freebsd123 kernel: hn1: offload rsc: ip4 2, ip6 2
                    Feb 25 08:48:02 freebsd123 kernel: hn2: hwcaps rsc: ip4 1 ip6 1
                    Feb 25 08:48:02 freebsd123 kernel: hn2: offload rsc: ip4 2, ip6 2
                    
                    

                    pfSense 2.6.0

                    [2.6.0-RELEASE][admin@pfSense.home.arpa]/root: grep -i "rsc" /var/log/system.log                
                    Feb 25 07:56:22 pfSense kernel: hn0: hwcaps rsc: ip4 1 ip6 1
                    Feb 25 07:56:22 pfSense kernel: hn0: offload rsc: ip4 2, ip6 2
                    Feb 25 07:56:22 pfSense kernel: hn1: hwcaps rsc: ip4 1 ip6 1
                    Feb 25 07:56:22 pfSense kernel: hn1: offload rsc: ip4 2, ip6 2
                    Feb 25 07:56:22 pfSense kernel: hn2: hwcaps rsc: ip4 1 ip6 1
                    Feb 25 07:56:22 pfSense kernel: hn2: offload rsc: ip4 2, ip6 2
                    
                    

                    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

                      @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

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