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[70.31.27.79]) by smtp.gmail.com with ESMTPSA id i7-20020ac85c07000000b0035d420c4ba7sm16026331qti.54.2022.10.05.13.27.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Oct 2022 13:27:04 -0700 (PDT) Date: Wed, 5 Oct 2022 16:27:03 -0400 From: Peter Xu To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Andrew Morton , Shuah Khan , Hugh Dickins , Vlastimil Babka , Andrea Arcangeli , "Matthew Wilcox (Oracle)" , Jason Gunthorpe , John Hubbard Subject: Re: [PATCH v1 1/7] selftests/vm: add test to measure MADV_UNMERGEABLE performance Message-ID: References: <20220930141931.174362-1-david@redhat.com> <20220930141931.174362-2-david@redhat.com> MIME-Version: 1.0 In-Reply-To: <20220930141931.174362-2-david@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1665001629; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=irL9v4RVF7/aYmYVm2x3MQE53BoPEWEw/ly3HFpcK3M=; b=rbME/G1Y61LGtkBqFxuUOg+6bT8vr+Y/mGUkrNiIOWx0p4ElE2K2w6MoRAsLAnm6zs3aYS TCec3PA6WxRqjO4otYkFKe5frL5lNfyx7kdx7f9uxkM0rLcIqN3qd2Gh6dL3X/rxKLPGOy DVyqHRVorbEY5L1ymhwj4X7l3BaPs64= ARC-Authentication-Results: i=1; imf05.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="M/WIXjB6"; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf05.hostedemail.com: domain of peterx@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=peterx@redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1665001629; a=rsa-sha256; cv=none; b=R3bAEMl0pSMLNzJHXyeAT1xIbkUjMKi1DCBKkuDNgKXeS8eejMjjaXOx+xC9PfxODKGxWh MP/H76jz86Ct6AFXNWp5DMLcsubVMx4I4Bhg74q+D68j3+bIJhpveB5XKtJRzhdrIfnBGs 81xgQewplA6zH2V+9vUTuyeNW3+Wd2Y= X-Rspamd-Queue-Id: A697910000E Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="M/WIXjB6"; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf05.hostedemail.com: domain of peterx@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=peterx@redhat.com X-Rspam-User: X-Rspamd-Server: rspam10 X-Stat-Signature: 3nf85smyeikooqwkk47zyeqk4m713djb X-HE-Tag: 1665001629-986437 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Sep 30, 2022 at 04:19:25PM +0200, David Hildenbrand wrote: > Let's add a test to measure performance of KSM breaking not triggered > via COW, but triggered by disabling KSM on an area filled with KSM pages > via MADV_UNMERGEABLE. > > Signed-off-by: David Hildenbrand Acked-by: Peter Xu -- Peter Xu