Add 'weighted' DRS algorithm, and speed up DRS plan generation - #14111

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bhouse-nexthop wants to merge 18 commits into

apache:mainfrom

bhouse-nexthop:drs-weighted

Commits on Sep 10, 2026

Add a DAO method to count VMs per host
bhouse-nexthop
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66f36a2
Track a moving average of real host utilisation
bhouse-nexthop
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8756420
Add 'balancedweighted' VM allocation algorithm
bhouse-nexthop
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9faa41d
Fix three defects found in review of the weighted scoring
bhouse-nexthop
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edf6a43
Address the rest of the weighted scoring review
bhouse-nexthop
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c379671
Fix unreachable and NPE-prone branch in host anti-affinity
bhouse-nexthop
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515c3fd
Honor planned placements in host anti-affinity
bhouse-nexthop
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1afc0a2
Honor planned placements in non-strict host affinity
bhouse-nexthop
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0bc3d22
Re-check affinity before executing each DRS migration
bhouse-nexthop
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0e150da
Make the DRS affinity check correct
bhouse-nexthop
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43dbd77
Address the rest of the DRS anti-affinity review
bhouse-nexthop
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6482992
Stop DRS planning from redoing the same work
bhouse-nexthop
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5375b3b
Add 'weighted' DRS algorithm
bhouse-nexthop
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073371f
Fix defects found in review of the weighted DRS algorithm
bhouse-nexthop
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4cc5a90
Verify equivalent VMs share one candidate host lookup
bhouse-nexthop
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b5b1c1d
Declare the host load tracker where both its consumers can see it
bhouse-nexthop
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a6853a0
Re-check every migration, not only VMs in an affinity group
bhouse-nexthop
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685538b
Address review feedback on the weighted allocation algorithm
bhouse-nexthop
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63f5931