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[37.188.180.223]) by smtp.gmail.com with ESMTPSA id t67sm3892102wmt.48.2020.04.09.07.03.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2020 07:03:33 -0700 (PDT) Date: Thu, 9 Apr 2020 16:03:31 +0200 From: Michal Hocko To: kernel test robot Cc: Alexander Potapenko , Linus Torvalds , Kees Cook , Christoph Lameter , Masahiro Yamada , "Serge E. Hallyn" , Nick Desaulniers , Kostya Serebryany , Dmitry Vyukov , Sandeep Patil , Laura Abbott , Randy Dunlap , Jann Horn , Mark Rutland , Marco Elver , Andrew Morton , LKML , lkp@lists.01.org, OTC LSE PnP Subject: Re: [mm] 6471384af2: phoronix-test-suite.darktable.Masskrug.CPU-only.seconds 10.2% regression Message-ID: <20200409140331.GK18386@dhcp22.suse.cz> References: <20200409135029.GA2072@xsang-OptiPlex-9020> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200409135029.GA2072@xsang-OptiPlex-9020> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 09-04-20 21:50:29, kernel test robot wrote: > Greeting, > > FYI, we noticed a 10.2% regression of phoronix-test-suite.darktable.Masskrug.CPU-only.seconds due to commit: > > > commit: 6471384af2a6530696fc0203bafe4de41a23c9ef ("mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [...] > CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y > CONFIG_INIT_ON_FREE_DEFAULT_ON=y So the feature is enabled by default and therefore this is no regression. The feature is expected to have an overhead. It is nice to see that quantified. These numbers roughly match those presented when the feature was enabled. -- Michal Hocko SUSE Labs From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============1692065246614305080==" MIME-Version: 1.0 From: Michal Hocko To: lkp@lists.01.org Subject: Re: [mm] 6471384af2: phoronix-test-suite.darktable.Masskrug.CPU-only.seconds 10.2% regression Date: Thu, 09 Apr 2020 16:03:31 +0200 Message-ID: <20200409140331.GK18386@dhcp22.suse.cz> In-Reply-To: <20200409135029.GA2072@xsang-OptiPlex-9020> List-Id: --===============1692065246614305080== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Thu 09-04-20 21:50:29, kernel test robot wrote: > Greeting, > = > FYI, we noticed a 10.2% regression of phoronix-test-suite.darktable.Massk= rug.CPU-only.seconds due to commit: > = > = > commit: 6471384af2a6530696fc0203bafe4de41a23c9ef ("mm: security: introduc= e init_on_alloc=3D1 and init_on_free=3D1 boot options") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [...] > CONFIG_INIT_ON_ALLOC_DEFAULT_ON=3Dy > CONFIG_INIT_ON_FREE_DEFAULT_ON=3Dy So the feature is enabled by default and therefore this is no regression. The feature is expected to have an overhead. It is nice to see that quantified. These numbers roughly match those presented when the feature was enabled. -- = Michal Hocko SUSE Labs --===============1692065246614305080==--