系统频繁full gc，导致接口访问超时问题排查过程_fullgc导致无法响应接口请求

作者：2023面试高手 | 2024-06-11 17:29:57

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fullgc导致无法响应接口请求

springboot系统，访问另一微服务接口时报超时。以下是问题排查过程。


[root@localhost xx-service]# top -Hp 25158
 
top - 10:39:20 up 47 days, 24 min,  4 users,  load average: 3.20, 3.42, 3.30
Threads: 105 total,   1 running, 104 sleeping,   0 stopped,   0 zombie
%Cpu(s): 56.7 us,  0.2 sy,  0.0 ni, 43.2 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  7814412 total,   550664 free,  4066692 used,  3197056 buff/cache
KiB Swap:  7995388 total,  7818704 free,   176684 used.  3388156 avail Mem 
 
  PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                                                                                                                                   
25164 root      20   0 4728956   1.1g  24668 R 52.5 14.8   1026:30 java                                                                                                                                                                      
25160 root      20   0 4728956   1.1g  24668 S 44.5 14.8 810:05.29 java                                                                                                                                                                      
25161 root      20   0 4728956   1.1g  24668 S 43.5 14.8 809:54.96 java                                                                                                                                                                      
25162 root      20   0 4728956   1.1g  24668 S 42.5 14.8 810:01.85 java                                                                                                                                                                      
25163 root      20   0 4728956   1.1g  24668 S 41.9 14.8 810:10.74 java                                                                                                                                                                      
25158 root      20   0 4728956   1.1g  24668 S  0.0 14.8   0:00.00 java                                                                                                                                                                      
25159 root      20   0 4728956   1.1g  24668 S  0.0 14.8   0:12.39 java                                                                                                                                                                      
25165 root      20   0 4728956   1.1g  24668 S  0.0 14.8   0:02.37 java                                                                                                                                                                      
25166 root      20   0 4728956   1.1g  24668 S  0.0 14.8   0:00.69 java                                                                                                                                                                      
25167 root      20   0 4728956   1.1g  24668 S  0.0 14.8   0:00.00 java

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