Description of problem: Turbo Boost frequencies higher than 8% are a FEATURE of new CPU’s, but are “detected” as “ERROR” by the v7-1.2-25.el5 cpuscaling tests. V7 output for all logical CPUs (XEON L7555 1.866GHz/2.533 GHz Turbo Boost Mode): --- begin copy --- Note: found ida flag, increasing expected speedup by 8.0% CPU Frequency Speed Up: 1.90 Measured Speed Up: 2.26 Percentage Difference 18.7% Error: measured speedup vs expected speedup is 18.7% and is not within 10.0% margin. --- end copy --- New INTEL CPU’s are offering a TURBO BOOST MODE of more than 8 %. Examples: 35,7% Intel® Xeon® Processor L7555 Nehalem-EX ( 1.866 / 2.533 GHz ) 72,0% Intel® Xeon® Processor L3426 Lynnfield ( 1.86 / 3.2 GHz ) 101,2% Intel® Core™ i7 Mobile i7-620UM Arrandale ( 1.06 / 2.133 GHz ) ( see also attached list of INTEL CPU’s ) The current INTEL CPU list includes 110 CPUs with TURBO BOOST MODE, but only 28 CPUs are in the range 5% .. 10%. 72 CPUs are in the range of 11% ..102%. This has to be considered by the v7 cert suite. Version-Release number of selected component (if applicable): v7-1.2-25.el5 How reproducible: 100 % Steps to Reproduce: 1. Install V7 on a system with high turbo boost CPUs ( e.g. XEON L7555; see also attached list ) 2. Run "v7 run --test=cpuscaling" Actual results: Note: found ida flag, increasing expected speedup by 8.0% CPU Frequency Speed Up: 1.90 Measured Speed Up: 2.26 Percentage Difference 18.7% Error: measured speedup vs expected speedup is 18.7% and is not within 10.0% margin. Expected results: Higher Percentage Difference than 10% should not create the string "error..." or a better calculation of possible turbo boost frequencies should be implemented. Additional info:
Created attachment 462926 [details] INTEL CPUs with TURBO BOOST MODE
After changing the following line /usr/share/v7/tests/cpuscaling/cpuscaling.py:43: self.idaSpeedupFactor = 22.0 # percent the cpuscaling test on this system with XEON L7555 CPU's shows following result: Note: found ida flag, increasing expected speedup by 22.0% CPU Frequency Speed Up: 2.24 Measured Speed Up: 2.32 Percentage Difference 3.2%calculates All cpuscaling tests are showing “PASS”. Best regards Ernst-Heinrich
*** This bug has been marked as a duplicate of bug 579498 ***