From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760787AbYBFWlU (ORCPT ); Wed, 6 Feb 2008 17:41:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756756AbYBFWlE (ORCPT ); Wed, 6 Feb 2008 17:41:04 -0500 Received: from extu-mxob-2.symantec.com ([216.10.194.135]:35246 "EHLO extu-mxob-2.symantec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756568AbYBFWlD (ORCPT ); Wed, 6 Feb 2008 17:41:03 -0500 Date: Wed, 6 Feb 2008 22:40:50 +0000 (GMT) From: Hugh Dickins X-X-Sender: hugh@blonde.site To: "H. Peter Anvin" cc: Tomasz Chmielewski , LKML , Mika Lawando Subject: Re: What is the limit size of tmpfs /dev/shm ? In-Reply-To: <47AA2E40.2020701@zytor.com> Message-ID: References: <47A9CA0E.3030507@wpkg.org> <47AA0A2E.30701@zytor.com> <47AA102F.1070105@zytor.com> <47AA2E40.2020701@zytor.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 6 Feb 2008, H. Peter Anvin wrote: > > The specific application was this: > > - extract a kernel tarball > - "make distclean" > - cp -al the resulting tree > - apply a patch to each tree > - do a diff between the trees > - delete all files > > ... repeat something like 20,000 times. Right, thanks. Certainly extracting a tarball can be a surprising challenge for some filesystems. And you remind me that of course, to the extent that a load is about metadata (lots of creates for example), tmpfs can hardly lose since its metadata never goes out to swap. But there is plenty of data in your test above. Hugh