From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f46.google.com (mail-pa0-f46.google.com [209.85.220.46]) by kanga.kvack.org (Postfix) with ESMTP id 1C71B6B0254 for ; Thu, 3 Sep 2015 15:33:08 -0400 (EDT) Received: by padfa1 with SMTP id fa1so13063014pad.1 for ; Thu, 03 Sep 2015 12:33:07 -0700 (PDT) Received: from mga14.intel.com (mga14.intel.com. [192.55.52.115]) by mx.google.com with ESMTP id fo8si592123pad.223.2015.09.03.12.33.06 for ; Thu, 03 Sep 2015 12:33:07 -0700 (PDT) From: Andi Kleen Subject: Re: Can we disable transparent hugepages for lack of a legitimate use case please? References: Date: Thu, 03 Sep 2015 12:33:06 -0700 In-Reply-To: (James Hartshorn's message of "Mon, 24 Aug 2015 20:12:24 +0000") Message-ID: <878u8n47t9.fsf@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: James Hartshorn Cc: "linux-mm@kvack.org" James Hartshorn writes: Your report seems to completely lack any detail, like kernel version, description of the problem, etc. > I've been struggling with transparent hugepage performance issues, and > can't seem to find anyone who actually uses it intentionally. > Virtually every database that runs on linux however recommends > disabling it or setting it to madvise. I'm referring to: Please see if you can reproduce your problem on a recent mainline kernel (there were a lot of compaction improvements recently, which can be a source of issues with THP) If yes then please submit a test case and it can be investigated. If no then update. -Andi -- ak@linux.intel.com -- Speaking for myself only -- 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