Sometimes receiving packet(e.g. ICMP echo) has latency, around 190[ms].

Solution In Progress - Updated -

Issue

  • Sometimes receiving packet has latency. For example, ping command shows sometimes 200[ms]. The usual situation is less than 1 [ms].
  • The same issue in other packet is observed with OVS-DPDK.

Environment

  • Red Hat OpenStack Platform 17.1
  • Red Hat Enterprise Linux 9
  • There is a filter rule in nft or iptables which has LOG action.
  • kernel command line (/proc/cmdline) has console=ttyS0.

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