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MongoDB: db.setProfilingLevel() method

db.setProfilingLevel

The db.setProfilingLevel() method is used to modify the current database profiler level used by the database profiling system to capture data about performance. The mongod writes the output of the database profiler to the system.profile collection.

Syntax:

db.setProfilingLevel(level, slowms)

Parameters:

Name Description Required /
Optional		 Type
level Specifies a profiling level, which is either 0 for no profiling, 1 for only slow operations, or 2 for all operations. Required integer
slowms Sets the threshold in milliseconds for the profile to consider a query or operation to be slow. Optional integer

Example: MongoDB: db.setProfilingLevel() method 

db.setProfilingLevel(1);
db.setProfilingLevel(0);
db.setProfilingLevel(2);
db.setProfilingLevel(2,1);

Output:

> db.setProfilingLevel(1);
{ "was" : 0, "slowms" : 100, "ok" : 1 }
> db.setProfilingLevel(0);
{ "was" : 1, "slowms" : 100, "ok" : 1 }
> db.setProfilingLevel(2);
{ "was" : 0, "slowms" : 100, "ok" : 1 }
> db.setProfilingLevel(2,1);
{ "was" : 2, "slowms" : 100, "ok" : 1 }

Retrieve the restaurants data from here

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https://www.w3resource.com/mongodb/shell-methods/database/db-setProfilingLevel.php