Lecture: Profiling the Database

I’m watching Lecture: Profiling the Database and as you can see, the profiling level was 0 and the
slowms: 100
But after setting the slowms to 0, it is still 100 in the output as below:
{ "was": 1, "slowms": 100, "sampleRate": 1, "ok": 1 }
Why isn’t the "slowms" updated to 0?

Use db.getProfilingStatus() to check the status after you set a new value
When you run the set command it shows what was the previous value
Also see mongod.log