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在命令行中操作mongodb，db.testrests.find({})要想知道这条语句的时间，要怎么查看那？
db.testrests.find({})
1. Please use explain directly for find operation, for example:
db.tablename.find().explain( "executionStats" ) 关注输出的如下数值：explain.executionStats.executionTimeMillis
2. For Update/delete/insert operations, please set the profile and then check the log, for example:
db.setProfilingLevel(2) db.getProfilingLevel(） db.system.profile.find()
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
1. Please use explain directly for find operation, for example:
2. For Update/delete/insert operations, please set the profile and then check the log, for example: