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    Very slow traffic from other VM's through pfSense on XenServer

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    • C
      cmb
      last edited by

      Try disabling hardware checksum offloading under System>Advanced, Networking. TSO and LRO should also be disabled, though they likely already are since that's the default for those.

      Which type of NIC is showing up in the VM? re0, em0, xn0?

      1 Reply Last reply Reply Quote 0
      • M
        mortenchristensen
        last edited by

        Sorry.

        Tried to disable hardware checksum offloading. The other 2 were disabled by default.

        Did not improve the problem.

        NIC's in the pfSense VM are nx0 to nx3

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        • M
          mortenchristensen
          last edited by

          New test with a pfSense 2.1.
          Here internet-traffic from other VM's on the same Xenserver is normal.

          The problem seems to be new in pfSense 2.2.

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          • C
            cmb
            last edited by

            2.1x wouldn't have xn NICs, it's specific to that. Can you force it to e1000 NICs on 2.2 and see?

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            • M
              mortenchristensen
              last edited by

              2.1x wouldn't have xn NICs, it's specific to that. Can you force it to e1000 NICs on 2.2 and see?

              On my 2.1.5 the nic's are called re. Can you give me some hints on, where abd how to change the driver ?

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              • P
                phadm
                last edited by

                Hi,

                i have the same problem with RC 2.2 (XenServer 6.2, SP1016, different platforms and nics) . The problem is the offload engine. If you route traffic between virtual hosts, you get tcp retransmissions, only a few sessions survive….

                You have to disable the offload function at the VIF at the XenServer.
                First identify the uuid of the VIF's:

                xe vm-vif-list uuid=VMUUID

                And disable the offload settings:

                xe vif-param-set uuid=VIFUUID other-config:ethtool-gso="off"
                xe vif-param-set uuid=VIFUUID other-config:ethtool-ufo="off"
                xe vif-param-set uuid=VIFUUID other-config:ethtool-tso="off"
                xe vif-param-set uuid=VIFUUID other-config:ethtool-sg="off"
                xe vif-param-set uuid=VIFUUID other-config:ethtool-tx="off"
                xe vif-param-set uuid=VIFUUID other-config:ethtool-rx="off"

                shutdown / start the VM.

                And now the disadvantage, whitout offload engine the TCP throughput falls on GBIT level over the vswitch. With offload I reach over 371 MBps with fetch, download the xencenter.iso from dom0 via http, whitout 98 MBps.

                So who has a better solution, bring it on !!

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                • DerelictD
                  Derelict LAYER 8 Netgate
                  last edited by

                  This all worked for me on the test stack I use which is now all 2.2-RELEASE.  I don't really care about performance much in this application, but before I did this it was useless.  Thanks much.

                  Chattanooga, Tennessee, USA
                  A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                  DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                  Do Not Chat For Help! NO_WAN_EGRESS(TM)

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                  • M
                    mortenchristensen
                    last edited by

                    ___First identify the uuid of the VIF's:
                    xe vm-vif-list uuid=VMUUID

                    And disable the offload settings:
                    xe vif-param-set uuid=VIFUUID other-config:ethtool-gso="off"
                    xe vif-param-set uuid=VIFUUID other-config:ethtool-ufo="off"
                    xe vif-param-set uuid=VIFUUID other-config:ethtool-tso="off"
                    xe vif-param-set uuid=VIFUUID other-config:ethtool-sg="off"
                    xe vif-param-set uuid=VIFUUID other-config:ethtool-tx="off"
                    xe vif-param-set uuid=VIFUUID other-config:ethtool-rx="off"

                    shutdown / start the VM___

                    Used this on both a XenServer 6.5 and a 6.2 later upgraded to 6.5. On both it has given other VM's internet-access again.

                    Run the xe commands on a Xenserver Private Network, so I hope the speed degrade will only occur on traffic that involves that net.
                    I think, both the pfSense VM and the other VM's need to be restartet to get useful speed.

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                    • A
                      apollo13
                      last edited by

                      @phadm:

                      You have to disable the offload function at the VIF at the XenServer.
                      First identify the uuid of the VIF's:

                      Which VIF? Local or WAN or both?

                      Thanks,
                      Florian

                      1 Reply Last reply Reply Quote 0
                      • DerelictD
                        Derelict LAYER 8 Netgate
                        last edited by

                        I did it on all.

                        Chattanooga, Tennessee, USA
                        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                        Do Not Chat For Help! NO_WAN_EGRESS(TM)

                        1 Reply Last reply Reply Quote 0
                        • J
                          jpenninkhof
                          last edited by

                          This helped me too. I only did this for my LAN port.

                          In my setup it seemed to be sufficient to execute:
                          xe vif-param-set uuid=VIFUUID other-config:ethtool-tx="off"
                          xe vif-param-set uuid=VIFUUID other-config:ethtool-rx="off"

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                          • A
                            apollo13
                            last edited by

                            @jpenninkhof:

                            This helped me too. I only did this for my LAN port.

                            In my setup it seemed to be sufficient to execute:
                            xe vif-param-set uuid=VIFUUID other-config:ethtool-tx="off"
                            xe vif-param-set uuid=VIFUUID other-config:ethtool-rx="off"

                            I can confirm that the LAN port should be enough. On a related note, did someone install the XenServer Tools in the VM?

                            1 Reply Last reply Reply Quote 0
                            • C
                              corotte
                              last edited by

                              Hi,

                              updated my XenServer 6.2 to 6.5 a few day ago with my VM pfsense 2.1.5 with no issue

                              updated pfsense to 2.2 WITH XENTOOLS (xe-guest-utilties 6.0.2_3) and got the same issue !

                              installed xentool using that method http://blog.feld.me/posts/2014/07/pfsense-on-citrix-xenserver/ (Thanks feld !)

                              look like issue remain even with Xentools :/

                              anyone can confirm ?

                              StefanAlbrechtS 1 Reply Last reply Reply Quote 0
                              • DerelictD
                                Derelict LAYER 8 Netgate
                                last edited by

                                Yes.  It's broken.

                                Chattanooga, Tennessee, USA
                                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                                Do Not Chat For Help! NO_WAN_EGRESS(TM)

                                1 Reply Last reply Reply Quote 0
                                • C
                                  corotte
                                  last edited by

                                  damn !

                                  but a quesiton remain … was it working well in snapshot ? was it working well with previous version of xentool ?

                                  in this thread
                                  https://forum.pfsense.org/index.php?topic=86827.0
                                  it look like to be an issue with xn nic …
                                  maybe a previous version should work ?

                                  1 Reply Last reply Reply Quote 0
                                  • DerelictD
                                    Derelict LAYER 8 Netgate
                                    last edited by

                                    No.

                                    Just disable the tx/rx like in the above until FreeBSD and/or Citrix fixes it.

                                    Chattanooga, Tennessee, USA
                                    A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                                    DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                                    Do Not Chat For Help! NO_WAN_EGRESS(TM)

                                    1 Reply Last reply Reply Quote 0
                                    • C
                                      corotte
                                      last edited by

                                      Ok

                                      didi the above fix and it finally work.

                                      Thanks folks !

                                      1 Reply Last reply Reply Quote 0
                                      • dsiminiukD
                                        dsiminiuk
                                        last edited by

                                        My Internet speed normally is 20 Mb/s down and 2 Mb/s up.

                                        I deployed pfSense 2.2-RELEASE X64 in XenServer 6.5

                                        Without modification, the pfSense 2.2 would only muster 5 Mb/s down, and 0.06 Mb/s up. Painful.

                                        I applied the changes to the LAN side VIF and the upload speed went back to full 2 Mb/s. The WAN speed did not improve.

                                        I applied the changes to the WAN side VIF and the upload speed went back up to 20 Mb/s.

                                        Eureka!

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                                        • A
                                          Andy_
                                          last edited by

                                          It's just the tx-offload setting that needs to be changed, rx-offload is fixed-on.

                                          I can confirm the problem and fix with Debian Wheezy/Xen 4.1.4 dom0.

                                          ethtool -K ${dev} tx off in vif-bridge online did the trick.

                                          The issue wasn't submitted to freebsd-bugs so far, now it is:
                                          https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197344

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                                          • ?
                                            A Former User
                                            last edited by

                                            Interesting - only appears to apply to virtual interfaces.

                                            My pfSense VM is running in xen 4.2 (Centos 6.6 dom0) and has no speed issues, but I'm using pci-passthrough to give 2 dedicated hardware NICs (off a dual-port Intel card) to pfSense for LAN/WAN  (so that DMZ/intranet are physically separate too).

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