Profile CPU usage of threads in state
for howlong
, sampling
stacks at frequency
Hz.
Profile CPU usage of threads in state
for howlong
, sampling
stacks at frequency
Hz.
As an example, using Nyquist's sampling theorem, we see that sampling at 100Hz will accurately represent components 50Hz or less; ie. any stack that contributes 2% or more to the total CPU time.
Note that the maximum sampling frequency is set to 1000Hz. Anything greater than this is likely to consume considerable amounts of CPU while sampling.
The profiler will discount its own stacks.
TODO:
Call record
in a thread with the given parameters, returning a
Future
representing the completion of the profile.