https://community.intel.com/t5/Intel-Confidential-Computing/Calculating-elapsed-CPU-time/m-p/1146615#M2442 <P>I am writing C++ code to determine the elapsed time it takes for an operation inside the enclave.</P><P>&nbsp;</P><P>For this purpose I am using std::clock() , to determine the CPU time. I am starting the timer in the untrusted layer. Once the enclave operations are complete and the control comes back to the untrusted layer, I am calculating the elapsed time.</P><P>Question:-</P><OL><LI>Is my method of determining elapsed time correct?</LI><LI>When I do an enclave call, doesnt the CPU go into context switch ? And if it does does it treat the enclave also to be the same process? FYI:: My program is a single threaded process.</LI></OL> Tue, 05 Feb 2019 12:47:13 GMT kh__Naveen 2019-02-05T12:47:13Z https://community.intel.com/t5/Intel-Confidential-Computing/Calculating-elapsed-CPU-time/m-p/1146615#M2442 <P>I am writing C++ code to determine the elapsed time it takes for an operation inside the enclave.</P><P>&nbsp;</P><P>For this purpose I am using std::clock() , to determine the CPU time. I am starting the timer in the untrusted layer. Once the enclave operations are complete and the control comes back to the untrusted layer, I am calculating the elapsed time.</P><P>Question:-</P><OL><LI>Is my method of determining elapsed time correct?</LI><LI>When I do an enclave call, doesnt the CPU go into context switch ? And if it does does it treat the enclave also to be the same process? FYI:: My program is a single threaded process.</LI></OL> Tue, 05 Feb 2019 12:47:13 GMT https://community.intel.com/t5/Intel-Confidential-Computing/Calculating-elapsed-CPU-time/m-p/1146615#M2442 kh__Naveen 2019-02-05T12:47:13Z