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  • pidstat 命令查看nginx上下文切换

    pidstat -w -p 711 1

    [root@leilei ~]# ps -ef|grep nginx
    root     13974     1  0 14:23 ?        00:00:00 nginx: master process nginx
    www      13975 13974  0 14:23 ?        00:00:00 nginx: worker process
    www      13976 13974  0 14:23 ?        00:00:00 nginx: worker process
    www      13977 13974  0 14:23 ?        00:00:00 nginx: cache manager process
    root     18769  9104  0 14:49 pts/0    00:00:00 grep --color=auto nginx
    
    [root@leilei ~]# pidstat -w -p 13975 1
    Linux 3.10.0-693.el7.x86_64 (leilei) 	04/28/2020 	_x86_64_	(2 CPU)
    
    02:49:27 PM   UID       PID   cswch/s nvcswch/s  Command
    02:49:28 PM  1000     13975      0.00      0.00  nginx
    02:49:29 PM  1000     13975      0.00      0.00  nginx
    02:49:30 PM  1000     13975      0.00      0.00  nginx
    02:49:31 PM  1000     13975      0.00      0.00  nginx
    02:49:32 PM  1000     13975      0.00      0.00  nginx
    02:49:33 PM  1000     13975      0.00      0.00  nginx
    
    如果 cswch/s 较为均匀,说明切换正常
    
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  • 原文地址:https://www.cnblogs.com/superlinux/p/12794258.html
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