d13412648d
Cells mean NUMA cells below in text. By default, first instance's cell are placed to the host's cell with id 0, so it will be exhausted first. Than host's cell with id 1 will be used and exhausted. It will lead to error placing instance with number of cells in NUMA topology equal to host's cells number if some instances with one cell topology are placed on cell with id 0 before. Fix will perform several sorts to put less used cells at the beginning of host_cells list based on PCI devices, memory and cpu usage when packing_host_numa_cells_allocation_strategy is set to False (so called 'spread strategy'), or will try to place all VM's cell to the same host's cell untill it will be completely exhausted and only after will start to use next available host's cell (so called 'pack strategy'), when the configuration option packing_host_numa_cells_allocation_strategy is set to True. Partial-Bug: #1940668 Change-Id: I03c4db3c36a780aac19841b750ff59acd3572ec6
11 lines
490 B
YAML
11 lines
490 B
YAML
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features:
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Extra sortings were added to numa_fit_instance_to_host function
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to balance usage of hypervisor's NUMA cells. Hypervisor's NUMA
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cells with more free resources (CPU, RAM, PCI if requested)
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will be used first (spread strategy) when configuration option
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``packing_host_numa_cells_allocation_strategy`` was set to False.
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Default value of ``packing_host_numa_cells_allocation_strategy``
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option is set to True which leads to packing strategy usage.
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