Uploaded image for project: 'TrueNAS'
  1. TrueNAS
  2. NAS-109373

latency on the lo0

    XMLWordPrintable

    Details

    • Impact:
      Low

      Description

      Hi

       

      i have a strange issue on my  server  Truenas 12 U1.2 , the ping latency on my local network is now very high (~10ms) but not only.
      my server DL380 G10 is in prod since ~2years on Freenas without really pb 

      when i ping from a server the filer via the lan, i have a latency of ~10ms but if i use the arping it's ok.

      by default the Lan is ok when i ping from the same server a another IP.
      # ping 192.168.200.20
      PING 192.168.200.20 (192.168.200.20) 56(84) bytes of data.
      64 bytes from 192.168.200.20: icmp_seq=1 ttl=64 time=0.386 ms
      64 bytes from 192.168.200.20: icmp_seq=2 ttl=64 time=0.268 ms
      64 bytes from 192.168.200.20: icmp_seq=3 ttl=64 time=0.229 ms

      i restart my filer , my switch , same issue on a another network with a different switch.

      if i start a arping from the same server to my filer it's ok
      # arping -I eno6 192.168.200.1
      ARPING 192.168.200.1 from 192.168.200.10 eno6
      Unicast reply from 192.168.200.1 [48:DF:37:AA:8B:93] 0.690ms
      Unicast reply from 192.168.200.1 [48:DF:37:AA:8B:93] 0.722ms
      Unicast reply from 192.168.200.1 [48:DF:37:AA:8B:93] 0.694ms

      and now the more funny is if i ping my server via my filer
      # ping 192.168.200.10
      PING 192.168.200.10 (192.168.200.10): 56 data bytes
      64 bytes from 192.168.200.10: icmp_seq=0 ttl=64 time=2.597 ms
      64 bytes from 192.168.200.10: icmp_seq=1 ttl=64 time=0.217 ms
      64 bytes from 192.168.200.10: icmp_seq=2 ttl=64 time=0.265 ms


      but if i ping my loopback on my filer i have the problem
      # ping 127.0.0.1
      PING 127.0.0.1 (127.0.0.1): 56 data bytes
      64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=19.367 ms
      64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=15.765 ms
      64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=9.164 ms

      same problem i create a new loopack interface
      # ifconfig lo1 create
      # ifconfig lo1 updated
      # ifconfig lo1 126.0.0.1
      # ping 126.0.0.1
      PING 126.0.0.1 (126.0.0.1): 56 data bytes
      64 bytes from 126.0.0.1: icmp_seq=0 ttl=64 time=11.958 ms
      64 bytes from 126.0.0.1: icmp_seq=1 ttl=64 time=10.576 ms

      the latency is ok if i boot on the iso install and start a shell.
      and i reinstall the server from scratch the ping on the lo0 is of ~10ms

      Rgds

       

       

        Attachments

          Attachments

            JEditor

              Activity

                People

                Assignee:
                mav Alexander Motin
                Reporter:
                corbello Charles Orbello
                Votes:
                0 Vote for this issue
                Watchers:
                5 Start watching this issue

                  Dates

                  Created:
                  Updated:
                  Resolved: