Bug 657356
| Summary: | V7 reports “error” on CPU’s with turbo boost speed greater 8% | ||||||
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| Product: | [Retired] Red Hat Hardware Certification Program | Reporter: | Ernst-Heinrich Klaas <ernst-heinrich.klaas> | ||||
| Component: | Test Suite (tests) | Assignee: | Greg Nichols <gnichols> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Red Hat Kernel QE team <kernel-qe> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 1.2 | CC: | rlandry, ykun | ||||
| Target Milestone: | --- | Keywords: | HwCertBlocker | ||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2010-12-02 19:14:24 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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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 *** |
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: