https://community.intel.com/t5/Intel-Confidential-Computing/Measure-per-thread-cpu-time-inside-an-enclave/m-p/1239406#M4186 <P>Hello.<BR /><BR />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, &amp;start) and getrusage(RUSAGE_THREAD, &amp;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?</P> <P>Regards, Benedikt</P> Mon, 21 Dec 2020 15:58:12 GMT Kopf__Benedikt 2020-12-21T15:58:12Z https://community.intel.com/t5/Intel-Confidential-Computing/Measure-per-thread-cpu-time-inside-an-enclave/m-p/1239406#M4186 <P>Hello.<BR /><BR />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, &amp;start) and getrusage(RUSAGE_THREAD, &amp;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?</P> <P>Regards, Benedikt</P> Mon, 21 Dec 2020 15:58:12 GMT https://community.intel.com/t5/Intel-Confidential-Computing/Measure-per-thread-cpu-time-inside-an-enclave/m-p/1239406#M4186 Kopf__Benedikt 2020-12-21T15:58:12Z https://community.intel.com/t5/Intel-Confidential-Computing/Measure-per-thread-cpu-time-inside-an-enclave/m-p/1243152#M4194 <P>Hello Kopf_Benedikt,</P><P><BR /></P><P>Yes, using getrusage in the manner you described will give you the amount of user time spent in the enclave between the two calls.</P><P><BR /></P><P>Sincerely,</P><P>Jesus G.</P><P>Intel Customer Support</P><BR /> Mon, 04 Jan 2021 19:30:16 GMT https://community.intel.com/t5/Intel-Confidential-Computing/Measure-per-thread-cpu-time-inside-an-enclave/m-p/1243152#M4194 JesusG_Intel 2021-01-04T19:30:16Z