From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============6861852082433950763==" MIME-Version: 1.0 From: Peter Zijlstra To: lkp@lists.01.org Subject: Re: [x86, paravirt] fd6f48529f: aim7.jobs-per-min -26.1% regression Date: Wed, 07 Dec 2016 14:17:40 +0100 Message-ID: <20161207131740.GY3092@twins.programming.kicks-ass.net> In-Reply-To: <20161130180729.GB15492@yexl-desktop> List-Id: --===============6861852082433950763== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Thu, Dec 01, 2016 at 02:07:29AM +0800, kernel test robot wrote: > = > Greeting, > = > FYI, we noticed a -26.1% regression of aim7.jobs-per-min due to commit: > = > = > commit: fd6f48529f4067c6bfbead88d3d7d117d51150f6 ("x86,paravirt: Optimize= native pv_lock_ops.vcpu_is_preempted") > https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/= core > = > in testcase: aim7 > on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 4 -m 5G > with following parameters: > = > test: link_test > load: 2000 > = > test-description: AIM7 is a traditional UNIX system level benchmark suite= which is used to test and measure the performance of multiuser system. > test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/ > = OK, so I'm having a very hard time reproducing this. How can I run this link_test stuff when I got aim7 compiled? This is all impenetrable gunk to me. Also, do you see the same problem with the upstream commit? 3cded4179481 ("x86/paravirt: Optimize native pv_lock_ops.vcpu_is_preempte= d()") --===============6861852082433950763==--