Graphene: serialize 100k objects, v2 vs v3

results.txt

Graphene 2: 6.852552616968751
Graphene 3: 15.776521055027843

test.py

import graphene

class UserQuery(graphene.ObjectType):
    id = graphene.Int()

class Query(graphene.ObjectType):
    users = graphene.List(UserQuery)

    def resolve_users(self, info):
        return users

class User(object):
    def __init__(self, id):
        self.id = id

users = [User(index) for index in range(0, 100_000)]

schema = graphene.Schema(query=Query)

import timeit
print(
  timeit.timeit(lambda: schema.execute('{ users { id } }').data, number=10)
)

tests.sh

#!/usr/bin/env bash
python3 -mvenv _env_g2
./_env_g2/bin/pip install graphene==2.1.8
python3 -mvenv _env_g3
./_env_g3/bin/pip install graphene==3.0.dev20190817210753

echo -n 'Graphene 2: '
./_env_g2/bin/python test.py
echo -n 'Graphene 3: '
./_env_g3/bin/python test.py