Fix affinity bonus normalization by totalCapacity in Score function

cursoragent · cursoragent · commit b7048af3428c · 2026-05-31T05:38:35.000Z
The affinity bonus is now divided by totalCapacity to match the normalization
applied to the base score, ensuring consistent placement behavior across nodes
with different CPU counts.
diff --git a/packages/api/internal/orchestrator/placement/placement_best_of_K.go b/packages/api/internal/orchestrator/placement/placement_best_of_K.go
@@ -63,7 +63,7 @@ func (b *BestOfK) Score(node *nodemanager.Node, resources nodemanager.SandboxRes
 
 	score := (cpuRequested + float64(reserved) + config.Alpha*usageAvg) / totalCapacity
 	if len(affinityScores) > 0 {
-		score -= affinityScores[0][node.ID]
+		score -= affinityScores[0][node.ID] / totalCapacity
 	}
 
 	return score

Original file line number	Diff line number	Diff line change
`@@ -63,7 +63,7 @@ func (b BestOfK) Score(node nodemanager.Node, resources nodemanager.SandboxRes`
`63`	`63`
`64`	`64`	`score := (cpuRequested + float64(reserved) + config.Alpha*usageAvg) / totalCapacity`
`65`	`65`	`if len(affinityScores) > 0 {`
`66`		`- score -= affinityScores[0][node.ID]`
	`66`	`+ score -= affinityScores[0][node.ID] / totalCapacity`
`67`	`67`	`}`
`68`	`68`
`69`	`69`	`return score`