From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753924AbYITXQx (ORCPT ); Sat, 20 Sep 2008 19:16:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751578AbYITXQp (ORCPT ); Sat, 20 Sep 2008 19:16:45 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:59849 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751519AbYITXQo (ORCPT ); Sat, 20 Sep 2008 19:16:44 -0400 Message-ID: <48D58401.4070403@linux-foundation.org> Date: Sat, 20 Sep 2008 18:15:13 -0500 From: Christoph Lameter User-Agent: Thunderbird 2.0.0.16 (Windows/20080708) MIME-Version: 1.0 To: KAMEZAWA Hiroyuki CC: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, jeremy@goop.org, ebiederm@xmission.com, travis@sgi.com, herbert@gondor.apana.org.au, xemul@openvz.org, penberg@cs.helsinki.fi Subject: Re: [patch 1/4] Make the per cpu reserve configurable References: <20080919145859.062069850@quilx.com> <20080919145928.322062135@quilx.com> <20080920125546.d6d7b42e.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20080920125546.d6d7b42e.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org KAMEZAWA Hiroyuki wrote: > Is this PERCPU_MODULE_RESERVE default size is fixex to 8192 bytes > both on 32bit-arch and 64bit-arch ? > Yes. > How about enlarging this to twice on 64bit arch now ? > > sorry for noise. No actually a good idea to discuss the limit here. Maybe use 10000 for 32 bit and 15000 for 64 bit? Many percpu variables are counters that may be integers. From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <48D58401.4070403@linux-foundation.org> Date: Sat, 20 Sep 2008 18:15:13 -0500 From: Christoph Lameter MIME-Version: 1.0 Subject: Re: [patch 1/4] Make the per cpu reserve configurable References: <20080919145859.062069850@quilx.com> <20080919145928.322062135@quilx.com> <20080920125546.d6d7b42e.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20080920125546.d6d7b42e.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, jeremy@goop.org, ebiederm@xmission.com, travis@sgi.com, herbert@gondor.apana.org.au, xemul@openvz.org, penberg@cs.helsinki.fi List-ID: KAMEZAWA Hiroyuki wrote: > Is this PERCPU_MODULE_RESERVE default size is fixex to 8192 bytes > both on 32bit-arch and 64bit-arch ? > Yes. > How about enlarging this to twice on 64bit arch now ? > > sorry for noise. No actually a good idea to discuss the limit here. Maybe use 10000 for 32 bit and 15000 for 64 bit? Many percpu variables are counters that may be integers. -- 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