VTune is a powerful application performance analysis software provided by Intel, VTune Amplifier XE 2011 integrates the main functions of Intel VTune Performance Analyzer and the Thread Profiler, while drawing on the advantages of Performance Tool Utility of this product. Which, Vtune Performance Analyzer is a performance analysis tool, mainly to help find the hot part of the software performance, it is the key point performance bottlenecks, help us collect data to identify problems in the code; Vtune Threading Profiler is threaded performance testing tools, there may be multiple threads load balancing, synchronization overhead too large thread-related performance problems, the tool can help find status information for each moment of each thread.
VTune Amplifier XE can be used to analyze the performance of applications running on Intel under single-core or multi-core processor, and may indicate improved application point on the associated hardware resources, in particular, use of the software users to access the main the following points:
l The processor time intensive region (hot spot);
l see where the application is running (by detecting binding Process);
l no code fully effective use of the available processor time;
synchronization affects the performance of the application program l objects;
l application is a waste of time in the input and output operations, where the waste, why waste;
l compares the effects of different methods of synchronization, the number of different threads, different algorithms for performance;
active threads and l the transition state;
L code associated with the hardware performance bottlenecks (e.g., a cache miss, the branch prediction fails, etc.);
Use Vtune analyzer, performance tuning can be made from an endless guessing game, become rational analysis. The tool offers two modes using the following user interface and command line. VTune Amplifier software version different operating systems, Intel site currently supports Windows, Linux and Vxworks system version is available for download. Ordinary users can get a free 30-day evaluation version, download URL: http://software.intel.com/en-us/articles/intel-vtune-amplifier-xe/ , tutorials can be viewed at the following website: HTTP: / /software.intel.com/zh-cn/forums/185/ .