redis异常崩溃 怎么查找原因？

3880:C 24 Mar 02:37:41.515 * RDB: 10 MB of memory used by copy-on-write
895:M 24 Mar 02:37:41.565 * Background saving terminated with success
895:M 24 Mar 02:39:02.227 * 10000 changes in 60 seconds. Saving...
895:M 24 Mar 02:39:02.273 * Background saving started by pid 3991
3991:C 24 Mar 02:39:05.625 * DB saved on disk
3991:C 24 Mar 02:39:05.645 * RDB: 12 MB of memory used by copy-on-write
895:M 24 Mar 02:39:05.680 * Background saving terminated with success
895:M 24 Mar 02:40:20.438 * 10000 changes in 60 seconds. Saving...
895:M 24 Mar 02:40:20.453 * Background saving started by pid 4099
4099:C 24 Mar 02:40:22.277 * DB saved on disk
4099:C 24 Mar 02:40:22.292 * RDB: 9 MB of memory used by copy-on-write
895:M 24 Mar 02:40:22.359 * Background saving terminated with success
907:M 24 Mar 07:59:42.179 * Increased maximum number of open files to 10032 (it was originally set to 1024).
                _._                                                  
           _.-``__ ''-._                                            
      _.-``    `.  `_.  ''-._           Redis 3.2.8 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                  
(    '      ,       .-`  | `,    )     Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
|    `-._   `._    /     _.-'    |     PID: 907
  `-._    `-._  `-./  _.-'    _.-'                                  
|`-._`-._    `-.__.-'    _.-'_.-'|                                  
|    `-._`-._        _.-'_.-'    |           ***redis.io        
  `-._    `-._`-.__.-'_.-'    _.-'                                  
|`-._`-._    `-.__.-'    _.-'_.-'|                                  
|    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                  
      `-._    `-.__.-'    _.-'                                      
          `-._        _.-'                                          
              `-.__.-'                                              

907:M 24 Mar 07:59:42.286 # Server started, Redis version 3.2.8
907:M 24 Mar 07:59:46.127 * DB loaded from disk: 3.841 seconds
907:M 24 Mar 07:59:46.127 * The server is now ready to accept connections on port 6379
907:M 24 Mar 08:01:58.908 * 10000 changes in 60 seconds. Saving...
907:M 24 Mar 08:01:58.909 * Background saving started by pid 2279
2279:C 24 Mar 08:01:59.778 * DB saved on disk
2279:C 24 Mar 08:01:59.779 * RDB: 2 MB of memory used by copy-on-write
907:M 24 Mar 08:01:59.809 * Background saving terminated with success
907:M 24 Mar 08:03:00.057 * 10000 changes in 60 seconds. Saving...
907:M 24 Mar 08:03:00.058 * Background saving started by pid 2306