Measure per-thread cpu time inside an enclave

[Kopf__Benedikt]

Hello.

I would like to measure the per-thread cpu time of a part of my program inside the enclave. If I create two ocalls, ocall_start_time and ocall_stop_time, which take the current per-thread CPU time using getrusage(RUSAGE_THREAD, &start) and getrusage(RUSAGE_THREAD, &stop). At the beginning of the interesting part I call ocall_start_time and at the end of the part I call ocall_stop_time. After obtaining the two values, I compute the difference between start and stop. Is the CPU time spend inside the enclave included in the result? If not, is there any other possibility to measure the per-thread CPU time spend inside an enclave?

Regards, Benedikt

[JesusG_Intel · Accepted solution]

Hello Kopf_Benedikt,

Yes, using getrusage in the manner you described will give you the amount of user time spent in the enclave between the two calls.

Sincerely,

Jesus G.

Intel Customer Support