syslog-ng文档

https://www.syslog-ng.com/technical-documents/doc/syslog-ng-open-source-edition/3.16/administration-guide/81

开启多线程syslog-ng

在配置文件里的options里加上threaded(yes)，然后syslog-ng-ctl reload

options {
    threaded(yes) ;
};

或者在syslog-ng的启动命令里设置--worker-threads