性能测试-linux下的常用命令汇总

1.1 cup使用率进行排序

[root@master ~]# top -c
top - 20:45:36 up  1:14,  4 users,  load average: 0.45, 0.85, 0.53
Tasks: 125 total,   1 running, 124 sleeping,   0 stopped,   0 zombie
%Cpu(s): 11.2 us, 15.3 sy,  0.0 ni, 73.3 id,  0.0 wa,  0.0 hi,  0.2 si,  0.0 st
KiB Mem :  4026164 total,  2921784 free,   564604 used,   539776 buff/cache
KiB Swap:  2097148 total,  2097148 free,        0 used.  3228744 avail Mem 

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                                                           
  1324 root      20   0 1241168  15464   6860 S   2.6  0.4   0:26.05 /opt/app/node_exporter-1.8.2/node_exporter --log.level=info                                                                                       
  1759 root      20   0  161856   6512   4788 S   2.3  0.2   0:11.19 sshd: root@pts/0,pts/1                                                                                                                            
  1919 root      20   0  161856   6508   4788 S   2.3  0.2   0:10.26 sshd: root@pts/2,pts/3                                                                                                                            
  2075 root      20   0  162836   3008   1548 S   1.0  0.1   0:03.18 top                                                                                                                                               
  1677 grafana   20   0 1497756 120168  57912 S   0.7  3.0   0:27.31 /usr/share/grafana/bin/grafana server --config=/etc/grafana/grafana.ini --pidfile=/var/run/grafana/grafana-server.pid --packaging=rpm cfg:defaul+ 
  1864 root      20   0  162836   3008   1548 S   0.7  0.1   0:03.25 top                                                                                                                                               
 14867 root      20   0  113284   1560   1316 S   0.7  0.0   0:00.02 bash -c export LANG="en_US.U

1.2 以进程号查看对应线程的cup使用

# 查看 math-game java程序的进程
[root@master ~]# ps -ef | grep java
root       5826   1761  0 20:40 pts/0    00:00:02 java -jar math-game.jar
root      16809   1935  0 20:46 pts/2    00:00:00 grep --color=auto java

[root@master ~]# top -Hp 5826
top - 20:47:47 up  1:17,  4 users,  load average: 0.93, 0.90, 0.59
Threads:  14 total,   0 running,  14 sleeping,   0 stopped,   0 zombie
%Cpu(s):  9.6 us, 14.2 sy,  0.0 ni, 75.8 id,  0.0 wa,  0.0 hi,  0.3 si,  0.0 st
KiB Mem :  4026164 total,  2920020 free,   565612 used,   540532 buff/cache
KiB Swap:  2097148 total,  2097148 free,        0 used.  3227724 avail Mem 

   PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                                                                                                            
  5919 root      20   0 3368920  26808  12356 S  0.3  0.7   0:00.98 VM Periodic Tas                                                                                                                                    
  5826 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.07 java                                                                                                                                               
  5867 root      20   0 3368920  26808  12356 S  0.0  0.7   0:01.51 java                                                                                                                                               
  5868 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 GC task thread#                                                                                                                                    
  5869 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 GC task thread#                                                                                                                                    
  5870 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 Gang worker#0 (                                                                                                                                    
  5871 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 Gang worker#1 (                                                                                                                                    
  5872 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.04 VM Thread                                                                                                                                          
  5904 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 Reference Handl                                                                                                                                    
  5908 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 Finalizer                                                                                                                                          
  5915 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 Signal Dispatch                                                                                                                                    
  5916 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.14 C2 CompilerThre                                                                                                                                    
  5917 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.28 C1 CompilerThre                                                                                                                                    
  5918 root      20   0 3368920  26808  12356 S  0.0  0.7   0:00.00 Service Thread  

查看线程PID的堆栈信息 jstack 进程ID | grep 线程PID的16进制数

printf "%x\n" 线程的PID 转16进制

[root@master ~]# printf "%x\n" 5869
16ed
[root@master ~]# jstack 5826 | grep 16ed
"GC task thread#1 (ParallelGC)" os_prio=0 cpu=0.83ms elapsed=3460.53s tid=0x00007fc5a8021000 nid=0x16ed runnable 

1.3 jcmd 命令查看java进程

[root@master ~]# jcmd
5826 math-game.jar
31548 sun.tools.jcmd.JCmd

1.4 jmap -heap 进程号 查看进程堆内存

[root@master ~]# jmap -heap 5826
Attaching to process ID 5826, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.412-b11

using thread-local object allocation.
Parallel GC with 2 thread(s)

Heap Configuration:
   MinHeapFreeRatio         = 0
   MaxHeapFreeRatio         = 100
   MaxHeapSize              = 1031798784 (984.0MB)
   NewSize                  = 21495808 (20.5MB)
   MaxNewSize               = 343932928 (328.0MB)
   OldSize                  = 43515904 (41.5MB)
   NewRatio                 = 2
   SurvivorRatio            = 8
   MetaspaceSize            = 21807104 (20.796875MB)
   CompressedClassSpaceSize = 1073741824 (1024.0MB)
   MaxMetaspaceSize         = 17592186044415 MB
   G1HeapRegionSize         = 0 (0.0MB)

Heap Usage:
PS Young Generation
Eden Space:
   capacity = 16252928 (15.5MB)
   used     = 3251320 (3.1007003784179688MB)
   free     = 13001608 (12.399299621582031MB)
   20.00451857043851% used
From Space:
   capacity = 2621440 (2.5MB)
   used     = 0 (0.0MB)
   free     = 2621440 (2.5MB)
   0.0% used
To Space:
   capacity = 2621440 (2.5MB)
   used     = 0 (0.0MB)
   free     = 2621440 (2.5MB)
   0.0% used
PS Old Generation
   capacity = 43515904 (41.5MB)
   used     = 0 (0.0MB)
   free     = 43515904 (41.5MB)
   0.0% used

1680 interned Strings occupying 109136 bytes.