From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id 708B68D0039 for ; Thu, 24 Feb 2011 03:08:51 -0500 (EST) Subject: Re: too big min_free_kbytes From: Shaohua Li In-Reply-To: <20110223144509.GG31195@random.random> References: <20110126152302.GT18984@csn.ul.ie> <20110126154203.GS926@random.random> <20110126163655.GU18984@csn.ul.ie> <20110126174236.GV18984@csn.ul.ie> <20110127134057.GA32039@csn.ul.ie> <20110127152755.GB30919@random.random> <20110203025808.GJ5843@random.random> <20110214022524.GA18198@sli10-conroe.sh.intel.com> <20110222142559.GD15652@csn.ul.ie> <1298438954.19589.7.camel@sli10-conroe> <20110223144509.GG31195@random.random> Content-Type: text/plain; charset="UTF-8" Date: Thu, 24 Feb 2011 16:08:47 +0800 Message-ID: <1298534927.19589.41.camel@sli10-conroe> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Andrea Arcangeli Cc: Mel Gorman , Andrew Morton , linux-mm , "Chen, Tim C" , Rik van Riel , "Shi, Alex" , Andi Kleen On Wed, 2011-02-23 at 22:45 +0800, Andrea Arcangeli wrote: > On Wed, Feb 23, 2011 at 01:29:14PM +0800, Shaohua Li wrote: > > Fixing it will let more people enable THP by default. but anyway we will > > disable it now if the issue can't be fixed. > > Did you try what happens with transparent_hugepage=madvise? If that > doesn't fix it, it's min_free_kbytes issue. with madvise, the min_free_kbytes is still high (same as the 'always' case). The result is still we have about 50M memory is reserved. you can try at your machine with boot option 'mem=2G' and check the zoneinfo output. Thanks, Shaohua -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org