Intel ixgbe NIC throughput slow after updating kernel

Solution Verified - Updated -

Issue

  • After upgrade from kernel version 3.10.0-862.3.2 to 3.10.0-957.12.2 and newer (3.10.0-1062 and 3.10.0-1062.1) we observe significant performance drop.
  • Using 3.10.0-862.3.2 kernel, our application was able to achieve stable throughput 13,000 TPS, however after upgrade to the latest errata, we hardly achieve 1,000 TPS.

Environment

  • Red Hat Enterprise Linux 7.7 (kernel-3.10.0-1062.el7 series)
  • Red Hat Enterprise Linux 7.6 (kernel-3.10.0-957.el7 series)
  • Intel network interface using ixgbe driver

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