https://community.intel.com/t5/Intel-ISA-Extensions/Instructions-Retired-Equation/m-p/813519#M930 Since you have an out-of-order engine, a stall can be hidden by other instructions. You can therefore expectin the best casean educated guess for such an equation. The<A href="http://assets.devx.com/goparallel/17775.pdf"> Cycle Accounting Analysis on Intel Core2 Processors</A>develops such an equation. The <A href="http://www.google.com/url?sa=t&amp;source=web&amp;cd=1&amp;ved=0CBUQFjAA&amp;url=http%3A%2F%2Fsoftware.intel.com%2Fsites%2Fproducts%2Fcollateral%2Fhpc%2Fvtune%2Fperformance_analysis_guide.pdf&amp;ei=vJWpTPHCGJi8jAfW08nhDA&amp;usg=AFQjCNGqaaB-G_tiRIoQcvXAcNe8kRi2KQ">Performance Analysis Guide for Intel CoreTM i7 Processor and Intel()R Xeon processor 5500 series</A>provides very detailed insights, but doesn't go down the path to develop a full equation. You might also be interested in checking out the new <A href="http://software.intel.com/en-us/articles/platform-monitoring/">Platform Monitoring Community</A>.<BR /><BR /> Mon, 04 Oct 2010 08:55:25 GMT Thomas_W_Intel 2010-10-04T08:55:25Z https://community.intel.com/t5/Intel-ISA-Extensions/Instructions-Retired-Equation/m-p/813518#M929 Hi,<BR /><BR />For my experiments I am trying to formulate an equation which gives the Instructions retired in a given Interval.<BR /><BR />Like, the frequency utilization in a second f can be described as.<BR /><BR />f= IR*CPIexe + Bus_Trans_Mem*Penalty*Miss rate + I/O Stalls+ ROB Stalls+Branch Misprediction Stalls + other stalls.<BR /><BR />Can anybody explain if the above formulation is correct?<BR /><BR /> Fri, 01 Oct 2010 19:38:36 GMT https://community.intel.com/t5/Intel-ISA-Extensions/Instructions-Retired-Equation/m-p/813518#M929 gokussj9 2010-10-01T19:38:36Z https://community.intel.com/t5/Intel-ISA-Extensions/Instructions-Retired-Equation/m-p/813519#M930 Since you have an out-of-order engine, a stall can be hidden by other instructions. You can therefore expectin the best casean educated guess for such an equation. The<A href="http://assets.devx.com/goparallel/17775.pdf"> Cycle Accounting Analysis on Intel Core2 Processors</A>develops such an equation. The <A href="http://www.google.com/url?sa=t&amp;source=web&amp;cd=1&amp;ved=0CBUQFjAA&amp;url=http%3A%2F%2Fsoftware.intel.com%2Fsites%2Fproducts%2Fcollateral%2Fhpc%2Fvtune%2Fperformance_analysis_guide.pdf&amp;ei=vJWpTPHCGJi8jAfW08nhDA&amp;usg=AFQjCNGqaaB-G_tiRIoQcvXAcNe8kRi2KQ">Performance Analysis Guide for Intel CoreTM i7 Processor and Intel()R Xeon processor 5500 series</A>provides very detailed insights, but doesn't go down the path to develop a full equation. You might also be interested in checking out the new <A href="http://software.intel.com/en-us/articles/platform-monitoring/">Platform Monitoring Community</A>.<BR /><BR /> Mon, 04 Oct 2010 08:55:25 GMT https://community.intel.com/t5/Intel-ISA-Extensions/Instructions-Retired-Equation/m-p/813519#M930 Thomas_W_Intel 2010-10-04T08:55:25Z