Infiniband performance issues with kernel 3.10.0-514.el7

Solution Unverified - Updated -

Issue

  • With kernel 3.10.0-514.el7, the I/O seems limited to 8 sectors, causing I/O operations to be much slower than with older kernels.
  • After an upgrade from RHEL 7.2 to RHEL 7.3, the performance in infiniband devices has dropped.

Environment

RHEL 7.3
kernel-3.10.0-514.el7
Infiniband

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