Docker下使用stress进行压力测试-低调大师

Docker下使用stress进行压力测试

2017-11-21 758

1、下载一个stress压力工具的镜像

 
         [root@docker ~]
         # docker pull joedval/stress 
        
         Pulling repository joedval
         /stress 
        
         7eb627cb08a2: Download complete 
        
         b0082ba983ef: Download complete 
        
         109b72e23ca5: Download complete 
        
         a1a076997d57: Download complete 
        
         Status: Downloaded newer image 
         for 
         joedval
         /stress
         :latest

2、随机生成一个以“joedval/stress”镜像为基础的容器，设定权级为512

 
         [root@docker ~]
         # docker run -it --rm -c 512 joedval/stress --cpu 1 
        
         stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
        
         可以看到cpu占用为99.6%，接近100%
        
         [root@docker ~]
         # top 
        
         top 
         - 15:19:07 up  1:04,  3 
         users
         ,  load average: 1.62, 1.03, 0.43 
        
         Tasks: 158 total,   2 running, 156 sleeping,   0 stopped,   0 zombie
        
         Cpu(s): 99.3%us,  0.3%sy,  0.0%ni,  0.0%
         id
         ,  0.0%wa,  0.3%hi,  0.0%si,  0.0%st 
        
         Mem:   3910160k total,  1289624k used,  2620536k 
         free
         ,    96856k buffers 
        
         Swap:  4194300k total,        0k used,  4194300k 
         free
         ,   914440k cached 
        
         PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                               
        
         4144 root      20   0  7208  120   28 R 99.6  0.0   2:58.09 stress                                                                                 
        
         4403 root      20   0 15032 1252  924 R  0.3  0.0   0:00.32 
         top                                                                                   
        
         1 root      20   0 19356 1532 1228 S  0.0  0.0   0:01.55 init                                                                                   
        
         2 root      20   0     0    0    0 S  0.0  0.0   0:00.00 kthreadd                                                                               
        
         3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration
         /0                                                                           
        
         4 root      20   0     0    0    0 S  0.0  0.0   0:00.03 ksoftirqd
         /0                                                                           
        
         5 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 stopper
         /0                                                                             
        
         6 root      RT   0     0    0    0 S  0.0  0.0   0:00.02 watchdog
         /0                                                                            
        
         7 root      20   0     0    0    0 S  0.0  0.0   0:01.62 events
         /0                                                                              
        
         8 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events
         /0                                                                              
        
         9 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events_long
         /0                                                                         
        
         10 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events_power_ef                                                                        
        
         11 root      20   0     0    0    0 S  0.0  0.0   0:00.00 cgroup                                                                                 
        
         12 root      20   0     0    0    0 S  0.0  0.0   0:00.00 khelper                                                                                
        
         13 root      20   0     0    0    0 S  0.0  0.0   0:00.03 netns                                                                                  
        
         14 root      20   0     0    0    0 S  0.0  0.0   0:00.00 async
         /mgr                                                                             
        
         15 root      20   0     0    0    0 S  0.0  0.0   0:00.00 pm                                                                                     
        
         16 root      20   0     0    0    0 S  0.0  0.0   0:00.02 sync_supers                                                                            
        
         17 root      20   0     0    0    0 S  0.0  0.0   0:00.01 bdi-default

3、继续生成一个容器

 
         root@docker ~]
         # docker run -it --rm -c 512 joedval/stress --cpu 1 
        
         stress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd
        
         [root@docker ~]
         # top 
        
         top 
         - 15:20:48 up  1:05,  3 
         users
         ,  load average: 1.55, 1.13, 0.52 
        
         Tasks: 164 total,   3 running, 161 sleeping,   0 stopped,   0 zombie
        
         Cpu(s): 99.0%us,  0.7%sy,  0.0%ni,  0.0%
         id
         ,  0.0%wa,  0.3%hi,  0.0%si,  0.0%st 
        
         Mem:   3910160k total,  1298324k used,  2611836k 
         free
         ,    97924k buffers 
        
         Swap:  4194300k total,        0k used,  4194300k 
         free
         ,   917480k cached 
        
         PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                               
        
         4772 root      20   0  7208  124   28 R 49.9  0.0   0:16.12 stress                                                                                 
        
         4144 root      20   0  7208  120   28 R 49.5  0.0   4:22.39 stress                                                                                 
        
         1 root      20   0 19356 1532 1228 S  0.0  0.0   0:01.55 init                                                                                   
        
         2 root      20   0     0    0    0 S  0.0  0.0   0:00.00 kthreadd                                                                               
        
         3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration
         /0                                                                           
        
         4 root      20   0     0    0    0 S  0.0  0.0   0:00.03 ksoftirqd
         /0                                                                           
        
         5 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 stopper
         /0                                                                             
        
         6 root      RT   0     0    0    0 S  0.0  0.0   0:00.02 watchdog
         /0                                                                            
        
         7 root      20   0     0    0    0 S  0.0  0.0   0:01.66 events
         /0                                                                              
        
         8 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events
         /0                                                                              
        
         9 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events_long
         /0                                                                         
        
         10 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events_power_ef                                                                        
        
         11 root      20   0     0    0    0 S  0.0  0.0   0:00.00 cgroup                                                                                 
        
         12 root      20   0     0    0    0 S  0.0  0.0   0:00.00 khelper                                                                                
        
         13 root      20   0     0    0    0 S  0.0  0.0   0:00.03 netns                                                                                  
        
         14 root      20   0     0    0    0 S  0.0  0.0   0:00.00 async
         /mgr                                                                             
        
         15 root      20   0     0    0    0 S  0.0  0.0   0:00.00 pm                                                                                     
        
         16 root      20   0     0    0    0 S  0.0  0.0   0:00.02 sync_supers                                                                            
        
         17 root      20   0     0    0    0 S  0.0  0.0   0:00.01 bdi-default         
        
         然后，可以发现存在两个stress的进程，各占用49.5%
        
         我们再次添加一个容器，并修改下stress权限为1024
        
         [root@docker ~]
         # top 
        
         top 
         - 15:22:13 up  1:07,  4 
         users
         ,  load average: 2.53, 1.50, 0.70 
        
         Tasks: 171 total,   4 running, 167 sleeping,   0 stopped,   0 zombie
        
         Cpu(s): 99.3%us,  0.3%sy,  0.0%ni,  0.0%
         id
         ,  0.0%wa,  0.3%hi,  0.0%si,  0.0%st 
        
         Mem:   3910160k total,  1318152k used,  2592008k 
         free
         ,    99008k buffers 
        
         Swap:  4194300k total,        0k used,  4194300k 
         free
         ,   921024k cached 
        
         PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                               
        
         4992 root      20   0  7208  120   28 R 49.5  0.0   0:09.79 stress                                                                                 
        
         4144 root      20   0  7208  120   28 R 24.9  0.0   4:59.56 stress                                                                                 
        
         4772 root      20   0  7208  124   28 R 24.6  0.0   0:53.28 stress                                                                                 
        
         1 root      20   0 19356 1532 1228 S  0.0  0.0   0:01.55 init                                                                                   
        
         2 root      20   0     0    0    0 S  0.0  0.0   0:00.01 kthreadd                                                                               
        
         3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration
         /0                                                                           
        
         4 root      20   0     0    0    0 S  0.0  0.0   0:00.03 ksoftirqd
         /0                                                                           
        
         5 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 stopper
         /0                                                                             
        
         6 root      RT   0     0    0    0 S  0.0  0.0   0:00.02 watchdog
         /0                                                                            
        
         7 root      20   0     0    0    0 S  0.0  0.0   0:01.69 events
         /0                                                                              
        
         8 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events
         /0                                                                              
        
         9 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events_long
         /0                                                                         
        
         10 root      20   0     0    0    0 S  0.0  0.0   0:00.00 events_power_ef                                                                        
        
         11 root      20   0     0    0    0 S  0.0  0.0   0:00.00 cgroup                                                                                 
        
         12 root      20   0     0    0    0 S  0.0  0.0   0:00.00 khelper                                                                                
        
         13 root      20   0     0    0    0 S  0.0  0.0   0:00.03 netns                                                                                  
        
         14 root      20   0     0    0    0 S  0.0  0.0   0:00.00 async
         /mgr                                                                             
        
         15 root      20   0     0    0    0 S  0.0  0.0   0:00.00 pm                                                                                     
        
         16 root      20   0     0    0    0 S  0.0  0.0   0:00.02 sync_supers

4、查看容器信息：

 
         [root@docker ~]
         # docker ps -a 
        
         CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                      PORTS               NAMES
        
         fcc6cb7b064c        joedval
         /stress      
         "stress --cpu 1"    
         29 seconds ago      Up 28 seconds                                   drunk_rosalind       
        
         7c195fe2e038        joedval
         /stress      
         "stress --cpu 1"    
         2 minutes ago       Up 2 minutes                                    loving_galileo       
        
         9b19fbca489b        joedval
         /stress      
         "stress --cpu 1"    
         7 minutes ago       Up 7 minutes                                    furious_rosalind

5、测试内存：

 
         [root@docker ~]
         # docker run -it --rm -m 128m joedval/stress --vm 1 --vm-bytes 120m --vm-hang 0 
        
         stress: info: [1] dispatching hogs: 0 cpu, 0 io, 1 vm, 0 hdd
        
         [root@docker ~]
         # docker ps -l 
        
         CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS              PORTS               NAMES
        
         9841ee711d7f        joedval
         /stress      
         "stress --vm 1 --vm-   8 seconds ago       Up 6 seconds                            boring_jones        
        
         [root@docker ~]
         # docker run -it --rm -m 128m joedval/stress --vm 1 --vm-bytes 512m --vm-hang 0 
        
         stress: info: [1] dispatching hogs: 0 cpu, 0 io, 1 vm, 0 hdd
        
         stress: FAIL: [1] (415) <-- worker 5 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 
         3s 
        
         [root@docker ~]
         # docker run -it --rm -m 128m joedval/stress --vm 1 --vm-bytes 255m --vm-hang 0 
        
         stress: info: [1] dispatching hogs: 0 cpu, 0 io, 1 vm, 0 hdd
        
         [root@docker ~]
         # docker run -it --rm -m 128m joedval/stress --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 
        
         说明：不能超过预设值的两倍(比如上面案例中256m是128m，所以自动退出了）

本文转自冰冻vs西瓜 51CTO博客，原文链接：http://blog.51cto.com/molewan/1757918，如需转载请自行联系原作者

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