What’s the difference between os_signpost and mxSignpost in iOS?

Solution for What’s the difference between os_signpost and mxSignpost in iOS?
is Given Below:

There are 2 similar performance logging metrics:

os_signpost(_:dso:log:name:signpostID:

and

mxSignpost(:dso:log:name:signpostID::_:)

What’s the difference between them?