diff --git a/benchutil/list_schema.go b/benchutil/list_schema.go
new file mode 100644
index 00000000..196a7f5c
--- /dev/null
+++ b/benchutil/list_schema.go
@@ -0,0 +1,110 @@
+package benchutil
+
+import (
+	"fmt"
+
+	"github.com/graphql-go/graphql"
+)
+
+type color struct {
+	Hex string
+	R   int
+	G   int
+	B   int
+}
+
+func ListSchemaWithXItems(x int) graphql.Schema {
+
+	list := generateXListItems(x)
+
+	color := graphql.NewObject(graphql.ObjectConfig{
+		Name:        "Color",
+		Description: "A color",
+		Fields: graphql.Fields{
+			"hex": &graphql.Field{
+				Type:        graphql.NewNonNull(graphql.String),
+				Description: "Hex color code.",
+				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
+					if c, ok := p.Source.(color); ok {
+						return c.Hex, nil
+					}
+					return nil, nil
+				},
+			},
+			"r": &graphql.Field{
+				Type:        graphql.NewNonNull(graphql.Int),
+				Description: "Red value.",
+				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
+					if c, ok := p.Source.(color); ok {
+						return c.R, nil
+					}
+					return nil, nil
+				},
+			},
+			"g": &graphql.Field{
+				Type:        graphql.NewNonNull(graphql.Int),
+				Description: "Green value.",
+				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
+					if c, ok := p.Source.(color); ok {
+						return c.G, nil
+					}
+					return nil, nil
+				},
+			},
+			"b": &graphql.Field{
+				Type:        graphql.NewNonNull(graphql.Int),
+				Description: "Blue value.",
+				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
+					if c, ok := p.Source.(color); ok {
+						return c.B, nil
+					}
+					return nil, nil
+				},
+			},
+		},
+	})
+
+	queryType := graphql.NewObject(graphql.ObjectConfig{
+		Name: "Query",
+		Fields: graphql.Fields{
+			"colors": {
+				Type: graphql.NewList(color),
+				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
+					return list, nil
+				},
+			},
+		},
+	})
+
+	colorSchema, _ := graphql.NewSchema(graphql.SchemaConfig{
+		Query: queryType,
+	})
+
+	return colorSchema
+}
+
+var colors []color
+
+func init() {
+	colors = make([]color, 0, 256*16*16)
+
+	for r := 0; r < 256; r++ {
+		for g := 0; g < 16; g++ {
+			for b := 0; b < 16; b++ {
+				colors = append(colors, color{
+					Hex: fmt.Sprintf("#%x%x%x", r, g, b),
+					R:   r,
+					G:   g,
+					B:   b,
+				})
+			}
+		}
+	}
+}
+
+func generateXListItems(x int) []color {
+	if x > len(colors) {
+		x = len(colors)
+	}
+	return colors[0:x]
+}
diff --git a/benchutil/wide_schema.go b/benchutil/wide_schema.go
new file mode 100644
index 00000000..2c7c43a2
--- /dev/null
+++ b/benchutil/wide_schema.go
@@ -0,0 +1,144 @@
+package benchutil
+
+import (
+	"fmt"
+
+	"github.com/graphql-go/graphql"
+)
+
+func WideSchemaWithXFieldsAndYItems(x int, y int) graphql.Schema {
+	wide := graphql.NewObject(graphql.ObjectConfig{
+		Name:        "Wide",
+		Description: "An object",
+		Fields:      generateXWideFields(x),
+	})
+
+	queryType := graphql.NewObject(graphql.ObjectConfig{
+		Name: "Query",
+		Fields: graphql.Fields{
+			"wide": {
+				Type: graphql.NewList(wide),
+				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
+					out := make([]struct{}, 0, y)
+					for i := 0; i < y; i++ {
+						out = append(out, struct{}{})
+					}
+					return out, nil
+				},
+			},
+		},
+	})
+
+	wideSchema, _ := graphql.NewSchema(graphql.SchemaConfig{
+		Query: queryType,
+	})
+
+	return wideSchema
+}
+
+func generateXWideFields(x int) graphql.Fields {
+	fields := graphql.Fields{}
+	for i := 0; i < x; i++ {
+		fields[generateFieldNameFromX(i)] = generateWideFieldFromX(i)
+	}
+	return fields
+}
+
+func generateWideFieldFromX(x int) *graphql.Field {
+	return &graphql.Field{
+		Type:    generateWideTypeFromX(x),
+		Resolve: generateWideResolveFromX(x),
+	}
+}
+
+func generateWideTypeFromX(x int) graphql.Type {
+	switch x % 8 {
+	case 0:
+		return graphql.String
+	case 1:
+		return graphql.NewNonNull(graphql.String)
+	case 2:
+		return graphql.Int
+	case 3:
+		return graphql.NewNonNull(graphql.Int)
+	case 4:
+		return graphql.Float
+	case 5:
+		return graphql.NewNonNull(graphql.Float)
+	case 6:
+		return graphql.Boolean
+	case 7:
+		return graphql.NewNonNull(graphql.Boolean)
+	}
+
+	return nil
+}
+
+func generateFieldNameFromX(x int) string {
+	var out string
+	alphabet := []string{"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "z"}
+	v := x
+	for {
+		r := v % 10
+		out = alphabet[r] + out
+		v = v / 10
+		if v == 0 {
+			break
+		}
+	}
+	return out
+}
+
+func generateWideResolveFromX(x int) func(p graphql.ResolveParams) (interface{}, error) {
+	switch x % 8 {
+	case 0:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			return fmt.Sprint(x), nil
+		}
+	case 1:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			return fmt.Sprint(x), nil
+		}
+	case 2:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			return x, nil
+		}
+	case 3:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			return x, nil
+		}
+	case 4:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			return float64(x), nil
+		}
+	case 5:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			return float64(x), nil
+		}
+	case 6:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			if x%2 == 0 {
+				return false, nil
+			}
+			return true, nil
+		}
+	case 7:
+		return func(p graphql.ResolveParams) (interface{}, error) {
+			if x%2 == 0 {
+				return false, nil
+			}
+			return true, nil
+		}
+	}
+
+	return nil
+}
+
+func WideSchemaQuery(x int) string {
+	var fields string
+	for i := 0; i < x; i++ {
+		fields = fields + generateFieldNameFromX(i) + " "
+	}
+
+	return fmt.Sprintf("query { wide { %s} }", fields)
+}
diff --git a/graphql_bench_test.go b/graphql_bench_test.go
new file mode 100644
index 00000000..5b135192
--- /dev/null
+++ b/graphql_bench_test.go
@@ -0,0 +1,124 @@
+package graphql_test
+
+import (
+	"testing"
+
+	"github.com/graphql-go/graphql"
+	"github.com/graphql-go/graphql/benchutil"
+)
+
+type B struct {
+	Query  string
+	Schema graphql.Schema
+}
+
+func benchGraphql(bench B, p graphql.Params, t testing.TB) {
+	result := graphql.Do(p)
+	if len(result.Errors) > 0 {
+		t.Fatalf("wrong result, unexpected errors: %v", result.Errors)
+	}
+}
+
+// Benchmark a reasonably large list of small items.
+func BenchmarkListQuery_1(b *testing.B) {
+	nItemsListQueryBenchmark(1)(b)
+}
+
+func BenchmarkListQuery_100(b *testing.B) {
+	nItemsListQueryBenchmark(100)(b)
+}
+
+func BenchmarkListQuery_1K(b *testing.B) {
+	nItemsListQueryBenchmark(1000)(b)
+}
+
+func BenchmarkListQuery_10K(b *testing.B) {
+	nItemsListQueryBenchmark(10 * 1000)(b)
+}
+
+func BenchmarkListQuery_100K(b *testing.B) {
+	nItemsListQueryBenchmark(100 * 1000)(b)
+}
+
+func nItemsListQueryBenchmark(x int) func(b *testing.B) {
+	return func(b *testing.B) {
+		schema := benchutil.ListSchemaWithXItems(x)
+
+		bench := B{
+			Query: `
+				query {
+					colors {
+						hex
+						r
+						g
+						b
+					}
+				}
+			`,
+			Schema: schema,
+		}
+
+		for i := 0; i < b.N; i++ {
+
+			params := graphql.Params{
+				Schema:        schema,
+				RequestString: bench.Query,
+			}
+			benchGraphql(bench, params, b)
+		}
+	}
+}
+
+func BenchmarkWideQuery_1_1(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(1, 1)(b)
+}
+
+func BenchmarkWideQuery_10_1(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(10, 1)(b)
+}
+
+func BenchmarkWideQuery_100_1(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(100, 1)(b)
+}
+
+func BenchmarkWideQuery_1K_1(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(1000, 1)(b)
+}
+
+func BenchmarkWideQuery_1_10(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(1, 10)(b)
+}
+
+func BenchmarkWideQuery_10_10(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(10, 10)(b)
+}
+
+func BenchmarkWideQuery_100_10(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(100, 10)(b)
+}
+
+func BenchmarkWideQuery_1K_10(b *testing.B) {
+	nFieldsyItemsQueryBenchmark(1000, 10)(b)
+}
+
+func nFieldsyItemsQueryBenchmark(x int, y int) func(b *testing.B) {
+	return func(b *testing.B) {
+		schema := benchutil.WideSchemaWithXFieldsAndYItems(x, y)
+		query := benchutil.WideSchemaQuery(x)
+
+		bench := B{
+			Query:  query,
+			Schema: schema,
+		}
+
+		b.ResetTimer()
+
+		for i := 0; i < b.N; i++ {
+			params := graphql.Params{
+				Schema:        schema,
+				RequestString: bench.Query,
+			}
+			benchGraphql(bench, params, b)
+		}
+	}
+}
diff --git a/testutil/testutil.go b/testutil/testutil.go
index a57992aa..ff49f6b0 100644
--- a/testutil/testutil.go
+++ b/testutil/testutil.go
@@ -302,7 +302,7 @@ func init() {
 				Resolve: func(p graphql.ResolveParams) (interface{}, error) {
 					id, err := strconv.Atoi(p.Args["id"].(string))
 					if err != nil {
-					  return nil, err
+						return nil, err
 					}
 					return GetHuman(id), nil
 				},