flavor property mem_page_size=large vs mem_page_size=1G

Solution In Progress - Updated -

Issue

  • What is difference when using flavor property hw:mem_page_size=large and hw:mem_page_size=1G.

  • We use the following kernel parameter later on:

TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS=" default_hugepagesz=1GB hugepagesz=1G hugepages=106 intel_iommu=on intel_iommu=pt vfio_iommu_type1.allow_unsafe_interrupts=1 nmi_watchdog=0 transparent_hugepage=never intel_idle.max_cstate=0 processor.max_cstate=1 idle=mwait nohpet nosoftlockup isolcpus=1,3-35,37,39-71 "

Environment

  • Red Hat OpenStack Platform 13.0 (RHOSP)

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