本次性能测试在正式环境下单台服务器上Kafka处理MQ消息能力进行压力测试。测试包括对Kafka写入MQ消息和消费MQ消息进行压力测试，根据10w、100w和1000w级别的消息处理结果，评估Kafka的处理性能是否满足项目需求。（该项目期望Kafka能够处理上亿级别的MQ消息）
2.1 测试范围概述
测试使用Kafka自带的测试脚本，通过命令对Kafka发起写入MQ消息和Kafka消费MQ消息的请求。模拟不同数量级的MQ消息写入和MQ消息消费场景，根据Kafka的处理结果，评估Kafka是否满足处理亿级以上的消息的能力。
2.2性能测试场景设计
2.2.1 Kafka写入消息压力测试
| 测试场景 | MQ消息数 | 每秒写入消息数 | 记录大小(单位:字节) |
| Kafka消息写入测试 | 10W | 2000条 | 1000 |
| 10W | 5000条 | 1000 | |
| 100W | 5000条 | 1000 |
2.2.2 Kafka消费消息压力测试
| 测试场景 | 消费MQ消息数 |
| Kafka消息消费测试 | 10W |
| 100W | |
| 1000W |
2.3测试方法简要描述
2.3.1测试目的
验证带台服务器上Kafka写入消息和消费消息的能力，根据测试结果评估当前Kafka集群模式是否满足上亿级别的消息处理能力。
2.3.2测试方法
在服务器上使用Kafka自带的测试脚本，分别模拟10w、100w和1000w的消息写入请求，查看Kafka处理不同数量级的消息数时的处理能力，包括每秒生成消息数、吞吐量、消息延迟时间。Kafka消息吸入创建的topic命名为test_perf，使用命令发起消费该topic的请求，查看Kafka消费不同数量级别的消息时的处理能力。
压测命令信息：
| 测试项 | 压测消息数（单位:W） | 测试命令 |
| 写入MQ消息 | 10 | ./kafka-producer-perf-test.sh --topic test_perf --num-records 100000 --record-size 1000 --throughput 2000 --producer-props bootstrap.servers=10.150.30.60:9092 |
| 100 | ./kafka-producer-perf-test.sh --topic test_perf --num-records 1000000 --record-size 2000 --throughput 5000 --producer-props bootstrap.servers=10.150.30.60:9092 | |
| 1000 | ./kafka-producer-perf-test.sh --topic test_perf --num-records 10000000 --record-size 2000 --throughput 5000 --producer-props bootstrap.servers=10.150.30.60:9092 | |
| 消费MQ消息 | 10 | ./kafka-consumer-perf-test.sh --broker-list localhost:9092 --topic test_perf --fetch-size 1048576 --messages 100000 --threads 1 |
| 100 | ./kafka-consumer-perf-test.sh --broker-list localhost:9092 --topic test_perf --fetch-size 1048576 --messages 1000000 --threads 1 | |
| 1000 | ./kafka-consumer-perf-test.sh --broker-list localhost:9092 --topic test_perf --fetch-size 1048576 --messages 10000000 --threads 1 |
脚本执行目录：服务器上安装Kafka的bin目录；
3.1 测试环境机器配置表
| 主 机 | 数量 | 资 源 | 操作系统 |
| MQ消息服务/处理 | 1 | 硬件：1(核)-4(G)-40(G) | ubuntu-16.04.5-server-amd64 |
3.2 测试工具
| Kafka压测工具 | Kafka自带压测脚本 |
3.3 测试环境搭建
这里仅仅使用单机版的kakfa，为了快速搭建，使用自带的zk。
新建目录
mkdir /opt/kafka_server_test
dockerfile
FROM ubuntu:16.04
# 修改更新源为阿里云
ADD sources.list /etc/apt/sources.list
ADD kafka_2.12-2.1.0.tgz /
# 安装jdk
RUN apt-get update && apt-get install -y openjdk-8-jdk --allow-unauthenticated && apt-get clean all
EXPOSE 9092
# 添加启动脚本
ADD run.sh .
RUN chmod 755 run.sh
ENTRYPOINT [ "/run.sh"]run.sh
#!/bin/bash
# 启动自带的zookeeper
cd /kafka_2.12-2.1.0
bin/zookeeper-server-start.sh config/zookeeper.properties &
# 启动kafka
sleep 3
bin/kafka-server-start.sh config/server.properties
sources.list
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu xenial-security main restricted
deb http://mirrors.aliyun.com/ubuntu xenial-security universe
deb http://mirrors.aliyun.com/ubuntu xenial-security multiverse
目录结构如下：
./
├── dockerfile
├── kafka_2.12-2.1.0.tgz
├── run.sh
└── sources.list生成镜像
docker build -t kafka_server_test /opt/kafka_server_test
启动kafka
docker run -d -it kafka_server_test
4.1测试结果说明
本次测试针对Kafka消息处理的能力 进行压力测试，对Kafka集群服务器中的一台进行MQ消息服务的压力测试，关注Kafka消息写入的延迟时间是否满足需求。对Kafka集群服务器中的一台进行MQ消息处理的压力测试，验证Kafka的消息处理能力。
4.2.1写入MQ消息
| 测试项 | 设置消息总数 （单位:w） | 设置单个消息大小 （单位:字节） | 设置每秒发送消息数 | 实际写入消息数/秒 | 95%的消息延迟 (单位:ms) |
| 写入MQ消息 | 10 | 1000 | 2000 | 1999.84 | 1 |
| 100 | 1000 | 5000 | 4999.84 | 1 | |
| 1000 | 1000 | 5000 | 4999.99 | 1 |
压测结果
在上面已经启动了kafka容器，查看进程
root@ubuntu:/opt# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5ced2eb77349 kafka_server_test "/run.sh" 34 minutes ago Up 34 minutes 0.0.0.0:2181->2181/tcp, 0.0.0.0:9092->9092/tcp youthful_bhaskara进入kafka的bin目录
root@ubuntu:/opt# docker exec -it 5ced2eb77349 /bin/bash
root@5ced2eb77349:/# cd /kafka_2.12-2.1.0/
root@5ced2eb77349:/kafka_2.12-2.1.0# cd bin/1. 写入10w消息压测结果
执行命令
./kafka-producer-perf-test.sh --topic test_perf --num-records 100000 --record-size 1000 --throughput 2000 --producer-props bootstrap.servers=localhost:9092输出：
records sent, 1202.4 records/sec (1.15 MB/sec), 1678.8 ms avg latency, 2080.0 max latency.
records sent, 2771.8 records/sec (2.64 MB/sec), 1300.4 ms avg latency, 2344.0 max latency.
records sent, 2061.6 records/sec (1.97 MB/sec), 17.1 ms avg latency, 188.0 max latency.
records sent, 1976.6 records/sec (1.89 MB/sec), 10.0 ms avg latency, 177.0 max latency.
records sent, 2025.2 records/sec (1.93 MB/sec), 15.4 ms avg latency, 253.0 max latency.
records sent, 2000.8 records/sec (1.91 MB/sec), 6.1 ms avg latency, 163.0 max latency.
records sent, 1929.7 records/sec (1.84 MB/sec), 3.7 ms avg latency, 128.0 max latency.
records sent, 2072.0 records/sec (1.98 MB/sec), 14.1 ms avg latency, 163.0 max latency.
records sent, 2001.6 records/sec (1.91 MB/sec), 4.5 ms avg latency, 116.0 max latency.
records sent, 1997.602877 records/sec (1.91 MB/sec), 290.41 ms avg latency, 2344.00 ms max latency, 2 ms 50th, 1992 ms 95th, 2177 ms 99th, 2292 ms 99.9th.
2. 写入100w消息压测结果
执行命令
./kafka-producer-perf-test.sh --topic test_perf --num-records 1000000 --record-size 1000 --throughput 5000 --producer-props bootstrap.servers=localhost:9092输出：
records sent, 2158.5 records/sec (2.06 MB/sec), 2134.9 ms avg latency, 2869.0 max latency.
records sent, 7868.4 records/sec (7.50 MB/sec), 1459.2 ms avg latency, 2815.0 max latency.
records sent, 4991.0 records/sec (4.76 MB/sec), 20.3 ms avg latency, 197.0 max latency.
records sent, 4972.3 records/sec (4.74 MB/sec), 61.8 ms avg latency, 395.0 max latency.
records sent, 4880.2 records/sec (4.65 MB/sec), 64.7 ms avg latency, 398.0 max latency.
records sent, 5085.9 records/sec (4.85 MB/sec), 17.7 ms avg latency, 180.0 max latency.
records sent, 5030.8 records/sec (4.80 MB/sec), 14.7 ms avg latency, 157.0 max latency.
records sent, 5056.0 records/sec (4.82 MB/sec), 1.4 ms avg latency, 58.0 max latency.
records sent, 5001.0 records/sec (4.77 MB/sec), 0.8 ms avg latency, 58.0 max latency.
records sent, 5002.0 records/sec (4.77 MB/sec), 0.6 ms avg latency, 25.0 max latency.
records sent, 5000.0 records/sec (4.77 MB/sec), 0.6 ms avg latency, 14.0 max latency.
records sent, 5002.0 records/sec (4.77 MB/sec), 0.6 ms avg latency, 19.0 max latency.
records sent, 5005.0 records/sec (4.77 MB/sec), 1.2 ms avg latency, 57.0 max latency.
records sent, 5003.0 records/sec (4.77 MB/sec), 1.3 ms avg latency, 55.0 max latency.
records sent, 5000.0 records/sec (4.77 MB/sec), 0.9 ms avg latency, 44.0 max latency.
records sent, 5003.0 records/sec (4.77 MB/sec), 0.6 ms avg latency, 49.0 max latency.
records sent, 4988.0 records/sec (4.76 MB/sec), 1.1 ms avg latency, 49.0 max latency.
records sent, 5014.0 records/sec (4.78 MB/sec), 0.8 ms avg latency, 44.0 max latency.
records sent, 5001.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 10.0 max latency.
records sent, 5009.8 records/sec (4.78 MB/sec), 0.5 ms avg latency, 25.0 max latency.
records sent, 5001.2 records/sec (4.77 MB/sec), 0.5 ms avg latency, 7.0 max latency.
records sent, 5002.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 49.0 max latency.
records sent, 5005.0 records/sec (4.77 MB/sec), 0.6 ms avg latency, 25.0 max latency.
records sent, 5006.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 14.0 max latency.
records sent, 5005.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 19.0 max latency.
records sent, 4976.1 records/sec (4.75 MB/sec), 0.6 ms avg latency, 14.0 max latency.
records sent, 5036.0 records/sec (4.80 MB/sec), 0.6 ms avg latency, 18.0 max latency.
records sent, 4999.8 records/sec (4.77 MB/sec), 0.5 ms avg latency, 14.0 max latency.
records sent, 4980.2 records/sec (4.75 MB/sec), 0.5 ms avg latency, 14.0 max latency.
records sent, 5026.0 records/sec (4.79 MB/sec), 0.5 ms avg latency, 14.0 max latency.
records sent, 5003.0 records/sec (4.77 MB/sec), 0.4 ms avg latency, 10.0 max latency.
records sent, 5000.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 16.0 max latency.
records sent, 5007.0 records/sec (4.78 MB/sec), 0.5 ms avg latency, 42.0 max latency.
records sent, 5001.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 24.0 max latency.
records sent, 5002.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 14.0 max latency.
records sent, 5009.0 records/sec (4.78 MB/sec), 0.5 ms avg latency, 10.0 max latency.
records sent, 5006.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 18.0 max latency.
records sent, 5001.0 records/sec (4.77 MB/sec), 0.4 ms avg latency, 6.0 max latency.
records sent, 5000.0 records/sec (4.77 MB/sec), 128.2 ms avg latency, 955.0 max latency.
records sent, 4999.375078 records/sec (4.77 MB/sec), 88.83 ms avg latency, 2869.00 ms max latency, 1 ms 50th, 327 ms 95th, 2593 ms 99th, 2838 ms 99.9th.
3. 写入1000w消息压测结果
执行命令
./kafka-producer-perf-test.sh --topic test_perf --num-records 10000000 --record-size 1000 --throughput 5000 --producer-props bootstrap.servers=localhost:9092输出：
records sent, 1053.0 records/sec (1.00 MB/sec), 1952.7 ms avg latency, 3057.0 max latency.
records sent, 4173.8 records/sec (3.98 MB/sec), 4585.7 ms avg latency, 5256.0 max latency.
records sent, 9765.2 records/sec (9.31 MB/sec), 2621.9 ms avg latency, 4799.0 max latency.
...
records sent, 5000.8 records/sec (4.77 MB/sec), 0.6 ms avg latency, 79.0 max latency.
records sent, 4999.2 records/sec (4.77 MB/sec), 0.5 ms avg latency, 54.0 max latency.
records sent, 5003.0 records/sec (4.77 MB/sec), 0.5 ms avg latency, 19.0 max latency.
records sent, 4996.445029 records/sec (4.76 MB/sec), 310.11 ms avg latency, 22474.00 ms max latency, 1 ms 50th, 1237 ms 95th, 7188 ms 99th, 20824 ms 99.9th.
kafka-producer-perf-test.sh 脚本命令的参数解析（以100w写入消息为例）：
--topic topic名称，本例为test_perf
--num-records 总共需要发送的消息数，本例为100000
--record-size 每个记录的字节数，本例为1000
--throughput 每秒钟发送的记录数，本例为5000
--producer-props bootstrap.servers=localhost:9092 （发送端的配置信息，本次测试取集群服务器中的一台作为发送端,可在kafka的config目录，以该项目为例：/usr/local/kafka/config；查看server.properties中配置的zookeeper.connect的值，默认端口：9092）
MQ消息写入测试结果解析：
本例中写入100w条MQ消息为例，每秒平均向kafka写入了4.77MB的数据，大概是4999.375条消息/秒，每次写入的平均延迟为88.83毫秒，最大的延迟为2869毫秒。
4.2.2消费MQ消息
| 消费MQ消息 | 消费消息总数 （单位:w） | 共消费数据 （单位:M) | 每秒消费数据 （单位:M) | 每秒消费消息数 | 消费耗时 （单位:s) |
| 消费MQ消息 | 10 | 95.36 | 137 | 143899.3 | 0.695 |
| 100 | 953.66 | 177.19 | 185804.5 | 5.38 | |
| 1000 | 9536.73 | 198.25 | 207878.6 | 48.11 |
压测结果
1. 消费10w消息压测结果
./kafka-consumer-perf-test.sh --broker-list localhost:9092 --topic test_perf --fetch-size 1048576 --messages 100000 --threads 1注意：此脚本没有--zookeeper选项，参考链接有错误！
必须要执行写入10w消息之后，才能执行上面的命令，否则运行时，会报下面的错误！
[2018-12-06 05:47:52,832] WARN [Consumer clientId=consumer-1, groupId=perf-consumer-19548] Error while fetching metadata with correlation id 18 : {test_perf=LEADER_NOT_AVAILABLE} (org.apache.kafka.clients.NetworkClient)
WARNING: Exiting before consuming the expected number of messages: timeout (10000 ms) exceeded. You can use the --timeout option to increase the timeout.正常输出：
start.time, end.time, data.consumed.in.MB, MB.sec, data.consumed.in.nMsg, nMsg.sec, rebalance.time.ms, fetch.time.ms, fetch.MB.sec, fetch.nMsg.sec
2018-12-06 05:50:41:276, 2018-12-06 05:50:45:281, 95.3674, 23.8121, 100000, 24968.7890, 78, 3927, 24.2851, 25464.7313
2. 消费100w消息压测结果
./kafka-consumer-perf-test.sh --broker-list localhost:9092 --topic test_perf --fetch-size 1048576 --messages 1000000 --threads 1输出：
start.time, end.time, data.consumed.in.MB, MB.sec, data.consumed.in.nMsg, nMsg.sec, rebalance.time.ms, fetch.time.ms, fetch.MB.sec, fetch.nMsg.sec
2018-12-06 05:59:32:360, 2018-12-06 05:59:51:624, 954.0758, 49.5264, 1000421, 51932.1532, 41, 19223, 49.6320, 52042.9173
3. 消费1000w消息压测结果
./kafka-consumer-perf-test.sh --broker-list localhost:9092 --topic test_perf --fetch-size 1048576 --messages 10000000 --threads 1输出：
start.time, end.time, data.consumed.in.MB, MB.sec, data.consumed.in.nMsg, nMsg.sec, rebalance.time.ms, fetch.time.ms, fetch.MB.sec, fetch.nMsg.sec
2018-12-06 06:35:54:143, 2018-12-06 06:38:05:585, 9536.9539, 72.5564, 10000221, 76080.8646, 39, 131403, 72.5779, 76103.4451
kafka-consumer-perf-test.sh 脚本命令的参数为：
--broker-list 指定kafka的链接信息，本例为localhost:9092
--topic 指定topic的名称，本例为test_perf，即4.2.1中写入的消息；
--fetch-size 指定每次fetch的数据的大小，本例为1048576，也就是1M
--messages 总共要消费的消息个数，本例为1000000，100w
以本例中消费100w条MQ消息为例总共消费了954.07M的数据，每秒消费数据大小为49.52M，总共消费了1000421条消息，每秒消费51932.15条消息。
一般写入MQ消息设置5000条/秒时，消息延迟时间小于等于1ms，在可接受范围内，说明消息写入及时。
Kafka消费MQ消息时，1000W待处理消息的处理能力如果在每秒20w条以上，那么处理结果是理想的。
根据Kafka处理10w、100w和1000w级的消息时的处理能力，可以评估出Kafka集群服务，是否有能力处理上亿级别的消息。
本次测试是在单台服务器上进行，基本不需要考虑网络带宽的影响。所以单台服务器的测试结果，对评估集群服务是否满足上线后实际应用的需求，很有参考价值。
本文参考链接：
https://blog.csdn.net/laofashi2015/article/details/81111466
