docker_info_06_stressTest 压力测试

docker_info_06_stressTest压力测试

• linux下的压力测试工具(需要有epel源)

yum install stress -y
mkdir -p /data/docker/data/stress01
cd /data/docker/data/stress01
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[root@zuiyoujie stress01]# vim Dockerfile
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# Dockerfile by zhaoshuai in 20180829.
FROM centos
RUN yum install -y wget
RUN wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
RUN yum install -y stress && yum clean all
ENTRYPOINT ["stress"]
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# linux下的压力测试工具
[root@zuiyoujie stress01]# docker build -t zs/stress:v1 /data/docker/data/stress01/
Sending build context to Docker daemon 6.144 kB
Sending build context to Docker daemon
Step 0 : FROM centos
 ---> 9baab0af79c4
Step 1 : RUN yum install -y wget
 ---> Using cache
 ---> 656f1c470ccf
Step 2 : RUN wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
 ---> Running in 95c534233ea6
--2016-11-08 14:51:29--  http://mirrors.aliyun.com/repo/epel-6.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 112.124.140.210, 115.28.122.210
# 中间省略部分。。。。。
Loaded plugins: fastestmirror, ovl
Cleaning repos: base epel extras updates
Cleaning up everything
Cleaning up list of fastest mirrors
 ---> 656d336595a2
Removing intermediate container 78c64960bce8
Successfully built 656d336595a2
-----------------------------------------------------------

• 特别注意：以下命令不要在物理机测试

---------------cpu权重分配--------------------
# 默认分配1024权重
[root@zuiyoujie stress01]# docker run -it --rm zs/stress:v1 --cpu 1             # 默认权重1024启动docker容器
stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
^Cstress: FAIL: [1] (415) <-- worker 6 got signal 2
stress: WARN: [1] (417) now reaping child worker processes
stress: FAIL: [1] (421) kill error: No such process
stress: FAIL: [1] (451) failed run completed in 76s

# 使用top查看效果
---------
[root@zuiyoujie stress01]# docker run -it --rm -c 512 zs/stress:v1 --cpu 1      # 手动制定权重启动docker容器
stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
^Cstress: FAIL: [1] (415) <-- worker 6 got signal 2
stress: WARN: [1] (417) now reaping child worker processes
stress: FAIL: [1] (421) kill error: No such process
stress: FAIL: [1] (451) failed run completed in 13s

--------------CPU个数分配----------------------
[root@zuiyoujie stress01]# docker run -it --rm --cpuset=0 zs/stress:v1 --cpu 1  # 旧版用法
Warning: '--cpuset' is deprecated, it will be replaced by '--cpuset-cpus' soon. See usage.
stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
^Cstress: FAIL: [1] (415) <-- worker 6 got signal 2
stress: WARN: [1] (417) now reaping child worker processes
stress: FAIL: [1] (421) kill error: No such process
stress: FAIL: [1] (451) failed run completed in 84s

----------------------------------------------
[root@zuiyoujie stress01]# docker run -it --rm --cpuset-cpus=0 zs/stress:v1 --cpu 1     # 新版用法
stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
^Cstress: FAIL: [1] (415) <-- worker 6 got signal 2
stress: WARN: [1] (417) now reaping child worker processes
stress: FAIL: [1] (421) kill error: No such process
stress: FAIL: [1] (451) failed run completed in 72s
----------------------------------------------

-------测试docker容器对内存的限额-------
[root@zuiyoujie stress01]# docker run -it --rm -m 128m zs/stress:v1 --vm 1 --vm-bytes 120m --vm-hang 0
stress: info: [1] dispatching hogs: 0 cpu, 0 io, 1 vm, 0 hdd            # 手动结束进程
^Cstress: FAIL: [1] (415) <-- worker 6 got signal 2
stress: WARN: [1] (417) now reaping child worker processes
stress: FAIL: [1] (421) kill error: No such process
stress: FAIL: [1] (451) failed run completed in 49s
----------------------------------------------
# docker容器里的进程消耗的内存小于系统为容器分配的内存可以正常运行

[root@zuiyoujie stress01]# docker run -it --rm -m 128m zs/stress:v1 --vm 1 --vm-bytes 256m --vm-hang 0
stress: info: [1] dispatching hogs: 0 cpu, 0 io, 1 vm, 0 hdd
stress: FAIL: [1] (415) <-- worker 6 got signal 9
stress: WARN: [1] (417) now reaping child worker processes
stress: FAIL: [1] (421) kill error: No such process
stress: FAIL: [1] (451) failed run completed in 2s
----------------------------------------------
# docker容器里的进程消耗的内存超过系统为容器分配的内存可以正常运行，最大可以在2倍分配值内运行，超过则崩溃
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