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Diffstat (limited to 'releasenotes/notes/default-host-numa-strategy-to-spread-18668c6d80154042.yaml')
| -rw-r--r-- | releasenotes/notes/default-host-numa-strategy-to-spread-18668c6d80154042.yaml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/releasenotes/notes/default-host-numa-strategy-to-spread-18668c6d80154042.yaml b/releasenotes/notes/default-host-numa-strategy-to-spread-18668c6d80154042.yaml new file mode 100644 index 0000000000..aec87dc887 --- /dev/null +++ b/releasenotes/notes/default-host-numa-strategy-to-spread-18668c6d80154042.yaml @@ -0,0 +1,12 @@ +--- +upgrade: + - | + During the triage of https://bugs.launchpad.net/nova/+bug/1978372 + we compared the performance of nova's numa allocations strategies + as it applied to the large numbers of host and guest numa nodes. + Prior to ``Xena`` nova only supported a linear packing strategy. + In ``Xena`` ``[compute]/packing_host_numa_cells_allocation_strategy`` + was introduced maintaining the previous packing behavior by default. + The numa allocation strategy has now been defaulted to spread. + The old behavior can be restored by defining: + ``[compute]/packing_host_numa_cells_allocation_strategy=true`` |