[Fusion] Add Grouping for ExecutionNode

[michaelstaib]

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[github-actions]

Fusion Gateway Performance Results

Simple Composite Query

	Req/s	Err%
Constant (50 VUs)	2907.47	0.00%
Ramping (0-500-0 VUs)	3263.95	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	0.71ms	14.98ms	16.97ms	31.38ms	37.02ms	186.70ms
Ramping	0.82ms	67.16ms	68.29ms	125.73ms	141.43ms	285.56ms

query TestQuery {
  topProducts(first: 5) {
    inStock
    name
    price
    shippingEstimate
    upc
    weight
    reviews {
      id
      body
      author {
        id
        username
        name
      }
    }
  }
}

---

Deep Recursion Query

	Req/s	Err%
Constant (50 VUs)	826.65	0.00%
Ramping (0-500-0 VUs)	910.36	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	6.75ms	55.13ms	58.74ms	77.79ms	89.57ms	382.18ms
Ramping	2.00ms	213.58ms	232.67ms	472.20ms	521.30ms	759.71ms

query TestQuery {
  users {
    id
    username
    name
    reviews {
      id
      body
      product {
        inStock
        name
        price
        shippingEstimate
        upc
        weight
        reviews {
          id
          body
          author {
            id
            username
            name
            reviews {
              id
              body
              product {
                inStock
                name
                price
                shippingEstimate
                upc
                weight
              }
            }
          }
        }
      }
    }
  }
  topProducts(first: 5) {
    inStock
    name
    price
    shippingEstimate
    upc
    weight
    reviews {
      id
      body
      author {
        id
        username
        name
        reviews {
          id
          body
          product {
            inStock
            name
            price
            shippingEstimate
            upc
            weight
          }
        }
      }
    }
  }
}

---

Variable Batching Throughput

	Req/s	Err%
Constant (50 VUs)	23697.57	0.00%
Ramping (0-500-0 VUs)	18420.76	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	0.09ms	1.70ms	2.06ms	3.95ms	4.80ms	42.18ms
Ramping	0.09ms	9.58ms	11.44ms	23.29ms	28.07ms	96.90ms

query TestQuery($upc: ID!, $price: Long!, $weight: Long!) {
  productByUpc(upc: $upc) {
    inStock
    shippingEstimate(weight: $weight, price: $price)
  }
}

Variables (5 sets batched per request)

[
  { "upc": "1", "price": 899, "weight": 100 },
  { "upc": "2", "price": 1299, "weight": 1000 },
  { "upc": "3", "price": 15, "weight": 20 },
  { "upc": "4", "price": 499, "weight": 100 },
  { "upc": "5", "price": 1299, "weight": 1000 }
]

---

Run 22259139251 • Commit 8f0f80f • Sat, 21 Feb 2026 15:31:40 GMT