Increase GraphQL benchmark stability (#5284)

Author: watson

benchmark/sirun/plugin-graphql/meta.json

@@ -3,7 +3,7 @@
   "run": "node index.js",
   "run_with_affinity": "bash -c \"taskset -c $CPU_AFFINITY node index.js\"",
   "cachegrind": false,
-  "iterations": 2,
+  "iterations": 30,
   "instructions": true,
   "variants": {
     "control": {},

benchmark/sirun/plugin-graphql/schema.js

@@ -94,7 +94,7 @@ const Human = new graphql.GraphQLObjectType({
       async resolve (obj, args) {
         const promises = []
 
-        for (let i = 0; i < 100; i++) {
+        for (let i = 0; i < 20; i++) {
           promises.push(await Promise.resolve({}))
         }
 
@@ -115,7 +115,7 @@ const schema = new graphql.GraphQLSchema({
         async resolve (obj, args) {
           const promises = []
 
-          for (let i = 0; i < 100; i++) {
+          for (let i = 0; i < 20; i++) {
             promises.push(await Promise.resolve({}))
           }