Description of problem: In NFV-RT-based deployment, the nova-compute configuration needs a further tunning with below parameters. # grep ^[^#] /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf | grep -E "mem_stats_period_seconds|cpu_mode|cpu_model_extra_flags" cpu_mode=host-passthrough cpu_model_extra_flags=tsc-deadline mem_stats_period_seconds=0 We have tripleo hiredata "NovaLibvirtMemStatsPeriodSeconds: 0" to set nova.conf file with the following parameter "mem_stats_period_seconds=0" Hence we need similar options for other to parameters: cpu_mode=host-passthrough cpu_model_extra_flags=tsc-deadline Version-Release number of selected component (if applicable): Red Hat Enterprise Linux release 8.2 (Ootpa) Red Hat OpenStack Platform release 16.1 (Train) How reproducible: 100% reproduced in NFV perf lab. Steps to Reproduce: We have tried with following tripleo environment options but didn't help. NovaLibvirtCpuMode: host-passthrough NovaLibvirtCpuModelExtraFlags: tsc-deadline
This introduced https://bugzilla.redhat.com/show_bug.cgi?id=1901004
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Red Hat OpenStack Platform 16.1.3 bug fix and enhancement advisory), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2020:5413