Optimize deletion timestamp lookup by replacing sorting logic with linear scan to improve performance. Add profiling support with cmd/benchmark/profile.sh, introduce network load testing in benchmarks, and update benchmark reports with additional latency metrics (P90, bottom 10%).

pkg/utils/fastequal.go

@@ -15,3 +15,22 @@ func FastEqual[A constraints.Bytes, B constraints.Bytes](a A, b B) (same bool) {
 	}
 	return true
 }
+
+func FastCompare[A constraints.Bytes, B constraints.Bytes](
+	a A, b B,
+) (diff int) {
+	if len(a) != len(b) {
+		return
+	}
+	ab := []byte(a)
+	bb := []byte(b)
+	for i, v := range ab {
+		if v != bb[i] {
+			if v > bb[i] {
+				return 1
+			}
+			return -1
+		}
+	}
+	return 0
+}