From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rong Chen Subject: Re: [cpufreq] 06c4d00466: will-it-scale.per_process_ops -53.4% regression Date: Wed, 25 Mar 2020 15:51:47 +0800 Message-ID: <6f3067fd-5f2e-20f5-ca75-3e43d61c97b7@intel.com> References: <20200320131509.564059710@linutronix.de> <20200324060124.GC11705@shao2-debian> <406e39aa9890d4d518a2259b539858d82f4d6e18.camel@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <406e39aa9890d4d518a2259b539858d82f4d6e18.camel@linux.intel.com> Content-Language: en-US Sender: linux-acpi-owner@vger.kernel.org To: Srinivas Pandruvada , Andy Shevchenko Cc: Thomas Gleixner , LKML , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Greg Kroah-Hartman , Mark Gross , Tony Luck , "Rafael J. Wysocki" , Viresh Kumar , Linux PM , Len Brown , Paolo Bonzini , Darren Hart , Andy Shevchenko , ACPI Devel Maling List , linux-edac@vger.kernel.org, Platform Driver , Jean Delvare , Guenter Roeck , linux-hwmon@vger.kernel.or List-Id: platform-driver-x86.vger.kernel.org On 3/24/20 11:38 PM, Srinivas Pandruvada wrote: > On Tue, 2020-03-24 at 12:24 +0200, Andy Shevchenko wrote: >> On Tue, Mar 24, 2020 at 8:02 AM kernel test robot < >> rong.a.chen@intel.com> wrote: >>> Greeting, >>> >>> FYI, we noticed a -53.4% regression of will-it- >>> scale.per_process_ops due to commit: >>> commit: 06c4d00466eb374841bc84c39af19b3161ff6917 ("[patch 09/22] >>> cpufreq: Convert to new X86 CPU match macros") >>> url: >>> https://github.com/0day-ci/linux/commits/Thomas-Gleixner/x86-devicetable-Move-x86-specific-macro-out-of-generic-code/20200321-031729 >>> base: >>> https://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git >>> linux-next >>> >>> in testcase: will-it-scale >>> on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz >>> with 8G memory >>> with following parameters: >> drivers/cpufreq/speedstep-centrino.c change missed the terminator, >> perhaps it's a culprit, because I don't believe removing dups and >> reordering lines may affect this. >> Can you restore terminator there and re-test? > This is a Ivy Bridge. So if it has to do anything cpufreq then it is > not loading the cpufreq driver (intel_pstate or acpi_cpufreq). > What is > cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor > # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance