From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f172.google.com (mail-ob0-f172.google.com [209.85.214.172]) by kanga.kvack.org (Postfix) with ESMTP id 642806B0032 for ; Fri, 27 Feb 2015 17:14:47 -0500 (EST) Received: by mail-ob0-f172.google.com with SMTP id nt9so21361126obb.3 for ; Fri, 27 Feb 2015 14:14:47 -0800 (PST) Received: from vena.lwn.net (tex.lwn.net. [70.33.254.29]) by mx.google.com with ESMTPS id h2si1221930obe.68.2015.02.27.14.14.46 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 27 Feb 2015 14:14:46 -0800 (PST) Date: Fri, 27 Feb 2015 15:14:44 -0700 From: Jonathan Corbet Subject: Re: [PATCH] doc: add information about max_ptes_none Message-ID: <20150227151444.05ce1b31@lwn.net> In-Reply-To: <1424986476-6438-1-git-send-email-ebru.akagunduz@gmail.com> References: <1424986476-6438-1-git-send-email-ebru.akagunduz@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: Ebru Akagunduz Cc: linux-mm@kvack.org, riel@redhat.com, mgorman@suse.de, hughd@google.com, kirill.shutemov@linux.intel.com, akpm@linux-foundation.org, dave@stgolabs.net, aulmcquad@gmail.com, sasha.levin@oracle.com, xemul@parallels.com, linux-kernel@vger.kernel.org On Thu, 26 Feb 2015 23:34:36 +0200 Ebru Akagunduz wrote: > max_ptes_none specifies how many extra small pages (that are > not already mapped) can be allocated when collapsing a group > of small pages into one large page. > > /sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_none > > A higher value leads to use additional memory for programs. > A lower value leads to gain less thp performance. Value of > max_ptes_none can waste cpu time very little, you can > ignore it. Applied to the docs tree, thanks. jon -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org