profiling

问题 Is there a perf stat equivalent on Mac OS? I would like to do the same thing for a CLI command and googling is not yielding anything. 回答1: There was Instruments tool in Mac OS X to profile applications including with hardware PMU. Default is to do sampling profiler for CPU usage. Some docs: https://en.wikipedia.org/wiki/Instruments_(software) https://help.apple.com/instruments/mac/current/ It also has command line variant: https://help.apple.com/instruments/mac/current/#/devb14ffaa5 Open

问题 I am running code in a loop for multiple iterations on a dedicated CPU with RT priority and want to observe its behaviour over a long time. I found a very strange periodic behaviour of the code. Briefly, this is what the code does: Arraythread { while(1) { if(flag) Multiply matrix record time; reset flag; } } mainthread { for(30 mins) { set flag; record time; busy while(500 μs) } } Here are the details about the machine I am using: CPU: Intel(R) Xeon(R) Gold 6230 CPU @ 2.10 GHz L1 cache: 32K

问题 I am running code in a loop for multiple iterations on a dedicated CPU with RT priority and want to observe its behaviour over a long time. I found a very strange periodic behaviour of the code. Briefly, this is what the code does: Arraythread { while(1) { if(flag) Multiply matrix record time; reset flag; } } mainthread { for(30 mins) { set flag; record time; busy while(500 μs) } } Here are the details about the machine I am using: CPU: Intel(R) Xeon(R) Gold 6230 CPU @ 2.10 GHz L1 cache: 32K

问题 I am running code in a loop for multiple iterations on a dedicated CPU with RT priority and want to observe its behaviour over a long time. I found a very strange periodic behaviour of the code. Briefly, this is what the code does: Arraythread { while(1) { if(flag) Multiply matrix record time; reset flag; } } mainthread { for(30 mins) { set flag; record time; busy while(500 μs) } } Here are the details about the machine I am using: CPU: Intel(R) Xeon(R) Gold 6230 CPU @ 2.10 GHz L1 cache: 32K

来源： https://stackoverflow.com/questions/4808047/webgrind-on-wamp

来源： https://stackoverflow.com/questions/4808047/webgrind-on-wamp

来源： https://stackoverflow.com/questions/4808047/webgrind-on-wamp

来源： https://stackoverflow.com/questions/64076497/how-to-count-number-of-executed-instructions-of-a-process-id-including-all-futur

来源： https://stackoverflow.com/questions/64076497/how-to-count-number-of-executed-instructions-of-a-process-id-including-all-futur

来源： https://stackoverflow.com/questions/64076497/how-to-count-number-of-executed-instructions-of-a-process-id-including-all-futur