pykafka 写消息时速度极慢,只有 10 mgs / s 正常么?

# coding:utf=8

from pykafka.client import KafkaClient
import logging
import json
import time

logging.basicConfig(level= logging.WARNING)

produce_logger = logging.getLogger('prodrcer')


def kafka(use_rdkafka=False):
    client = KafkaClient('192.168.109.58:9092,192.168.109.70:9092,192.168.109.91:9092')

    produce_start = time.time()
    topic = client.topics['meteor_spider_article_dev']

    # producer = topic.get_producer(sync=True, use_rdkafka=use_rdkafka)

    msg_body = {
        'article_id': 1,
        "title": "标题",
        "subtitle": "副标题",
    }
    msg = json.dumps(msg_body)
    with topic.get_sync_producer() as producer:
        for i in range(0, 1000):
            producer.produce(msg)

    producer.stop()

    return time.time() - produce_start


def calculate_thoughput(timing, n_messages=1000, msg_size=5956):
    print("Processed {0} messsages in {1:.2f} seconds".format(n_messages, timing))
    print("{0:.2f} MB/s".format((msg_size * n_messages) / timing / (1024*1024)))
    print("{0:.2f} Msgs/s".format(n_messages / timing))

if __name__ == '__main__':
    calculate_thoughput(kafka())

Processed 1000 messsages in 76.68 seconds 0.07 MB/s 13.04 Msgs/s

这速度 怎么回事?