Red Hat Bugzilla – Bug 1252659
Certification of CPUSCALING for RHEL6.6 on Intel E7-4800/8800 Series FAIL
Last modified: 2017-04-22 22:17:37 EDT
Description of problem:
We recently make a hardware certification for our Server--FusionServer RH5885 V3 on RHEL6.6 with "
But the CPUSCALING test is slways FAIL
Version-Release number of selected component (if applicable):
Steps to Reproduce:
In order to prove it's a bug of RHEL6.6 or TestSuite. I do the follow steps:
1\I use the Intel E7-8890 V3 CPU.
2\I enable the SpeedStep and TurboBoost in BIOS setup.
3\I install the RHEL6.6 by "Sorfware Development Workstation"
4\All other Test items pass except the CPUSCALING.
5\I conduct the following commands:
<1>echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
<2>cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
For this: result is 1200000(which is the min_freq of CPU)
<4>cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq >
For this：result is still 1200000(It proves that the frequency cannot be changed by userspace governor)
6\I install RHEL7.0 on our SUT,and the CPUSCALING pass.For this, we think that it's not the bug of our SUT
Please help to solve this problem. What's more, we must pass all the test items, since it is the request from consumer.