https://community.intel.com/t5/Software-Archive/Intel-Parallel-Studio-feature-request-by-thread-results/m-p/744151#M1554 Hello,<BR /><BR />Based on the description you have given - I have the following hypothesis.<BR /><BR />The WaitForMultipleObjects - is "spinning waiting to be woke up" and is not telling the OS to put the thread to sleep (while it is waiting). While it is spinning - Perfomance Monitor will register that the CPU is busy doing something.<BR /><BR />Hotspot technology in Intel Parallel Amplifier will register samples to the WaitForMultipleObjects API - and it will identify that the CPU has been busy in that function.<BR /><BR />LocksandWaits technology in Intel Parallel Amplifier instruments WaitforMultipleObjects - and recognizes that the thread was "waiting".<BR /><BR />This is a hypothesis in order for me to verify, understand, explain, or to troubleshoot further, I will need a test case. Can you send me a screenshot of what you are seeing and can you zip up and send me your test solution?<BR /><BR />Also which version of Visual Studio, Windows and any Visual Studio or Windows Service packs are you using?<BR /><BR />Regards,<BR />Eric M Thu, 25 Mar 2010 23:27:12 GMT Eric_M_Intel2 2010-03-25T23:27:12Z https://community.intel.com/t5/Software-Archive/Intel-Parallel-Studio-feature-request-by-thread-results/m-p/744150#M1553 I love IPS. Period. But the usefulness could be greatly improved.<BR /><BR />Amplifier Locks-and-waits gives the option to break results by thread. This is super. I know my 4 or 8 worker threads I am interested in and the background or inactive workers I could not care less for.<BR /><BR />Amplifier Hotspots has no by-thread option. This means I get 64 seconds in WaitForMultipleObjects and 0.452 seconds in the next function call. I know that this time is in a listener (actually several idle threads including RPC, sockets, COM and other stuff) that has nothing to do, and I know there are 4 threads that pegged the 4 CPUs at 100% during the test and I cannot see them in the results?<BR /><BR />Am I doing something wrong? Or do I need by-thread breakdown of results like in Locks-and-waits?<BR /><BR />Thanks,<BR />Jurek Makowiecki Fri, 19 Mar 2010 01:56:27 GMT https://community.intel.com/t5/Software-Archive/Intel-Parallel-Studio-feature-request-by-thread-results/m-p/744150#M1553 jurektr 2010-03-19T01:56:27Z https://community.intel.com/t5/Software-Archive/Intel-Parallel-Studio-feature-request-by-thread-results/m-p/744151#M1554 Hello,<BR /><BR />Based on the description you have given - I have the following hypothesis.<BR /><BR />The WaitForMultipleObjects - is "spinning waiting to be woke up" and is not telling the OS to put the thread to sleep (while it is waiting). While it is spinning - Perfomance Monitor will register that the CPU is busy doing something.<BR /><BR />Hotspot technology in Intel Parallel Amplifier will register samples to the WaitForMultipleObjects API - and it will identify that the CPU has been busy in that function.<BR /><BR />LocksandWaits technology in Intel Parallel Amplifier instruments WaitforMultipleObjects - and recognizes that the thread was "waiting".<BR /><BR />This is a hypothesis in order for me to verify, understand, explain, or to troubleshoot further, I will need a test case. Can you send me a screenshot of what you are seeing and can you zip up and send me your test solution?<BR /><BR />Also which version of Visual Studio, Windows and any Visual Studio or Windows Service packs are you using?<BR /><BR />Regards,<BR />Eric M Thu, 25 Mar 2010 23:27:12 GMT https://community.intel.com/t5/Software-Archive/Intel-Parallel-Studio-feature-request-by-thread-results/m-p/744151#M1554 Eric_M_Intel2 2010-03-25T23:27:12Z