From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f50.google.com (mail-pb0-f50.google.com [209.85.160.50]) by kanga.kvack.org (Postfix) with ESMTP id 996A86B0037 for ; Mon, 31 Mar 2014 12:29:21 -0400 (EDT) Received: by mail-pb0-f50.google.com with SMTP id md12so8404434pbc.23 for ; Mon, 31 Mar 2014 09:29:21 -0700 (PDT) Received: from mga02.intel.com (mga02.intel.com. [134.134.136.20]) by mx.google.com with ESMTP id bp1si9488421pbb.49.2014.03.31.09.29.20 for ; Mon, 31 Mar 2014 09:29:20 -0700 (PDT) Message-ID: <5339977F.4070905@intel.com> Date: Mon, 31 Mar 2014 09:27:43 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: [PATCH v3 00/14] mm, hugetlb: remove a hugetlb_instantiation_mutex References: <1387349640-8071-1-git-send-email-iamjoonsoo.kim@lge.com> In-Reply-To: <1387349640-8071-1-git-send-email-iamjoonsoo.kim@lge.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Joonsoo Kim , Andrew Morton Cc: Rik van Riel , Mel Gorman , Michal Hocko , "Aneesh Kumar K.V" , KAMEZAWA Hiroyuki , Hugh Dickins , Davidlohr Bueso , David Gibson , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Joonsoo Kim , Wanpeng Li , Naoya Horiguchi , Hillf Danton On 12/17/2013 10:53 PM, Joonsoo Kim wrote: > * NOTE for v3 > - Updating patchset is so late because of other works, not issue from > this patchset. Hey Joonsoo, Any plans to repost these? I've got some folks with a couple TB of RAM seeing long startup times with $LARGE_DATABASE_PRODUCT. It looks to be contention on hugetlb_instantiation_mutex because everyone is trying to zero hugepages under that lock in parallel. Just removing the lock sped things up quite a bit. -- 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