From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e34.co.us.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id k5RIjdOV010717 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Tue, 27 Jun 2006 14:45:39 -0400 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay04.boulder.ibm.com (8.13.6/NCO/VER7.0) with ESMTP id k5RIjsan186436 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 27 Jun 2006 12:45:54 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id k5RIjcuZ007210 for ; Tue, 27 Jun 2006 12:45:38 -0600 Subject: Re: slow hugetlb from 2.6.15 From: Badari Pulavarty In-Reply-To: <20060627182325.GE6380@blackhole.websupport.sk> References: <20060627182325.GE6380@blackhole.websupport.sk> Content-Type: text/plain Date: Tue, 27 Jun 2006 11:47:37 -0700 Message-Id: <1151434062.8918.7.camel@dyn9047017100.beaverton.ibm.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: stanojr@blackhole.websupport.sk Cc: linux-mm List-ID: On Tue, 2006-06-27 at 20:23 +0200, stanojr@blackhole.websupport.sk wrote: > hello > > look at this benchmark http://www-unix.mcs.anl.gov/~kazutomo/hugepage/note.html > i try benchmark it on latest 2.6.17.1 (x86 and x86_64) and it slow like 2.6.16 on that web > (in comparing to standard 4kb page) > its feature or bug ? Most likely, its due to new feature - demand paging for large pages :) Doing mlock() on mmaped area help ? Thanks, Badari -- 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