From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srinivas Pandruvada Subject: Re: [cpufreq] 06c4d00466: will-it-scale.per_process_ops -53.4% regression Date: Tue, 24 Mar 2020 08:38:46 -0700 Message-ID: <406e39aa9890d4d518a2259b539858d82f4d6e18.camel@linux.intel.com> References: <20200320131509.564059710@linutronix.de> <20200324060124.GC11705@shao2-debian> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-pci-owner@vger.kernel.org To: Andy Shevchenko , kernel test robot 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 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 >