From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4464423D.50803@shadowen.org> Date: Fri, 12 May 2006 09:07:25 +0100 From: Andy Whitcroft MIME-Version: 1.0 Subject: Re: [RFC][PATCH 1/3] tracking dirty pages in shared mappings -V4 References: <1146861313.3561.13.camel@lappy> <445CA22B.8030807@cyberone.com.au> <1146922446.3561.20.camel@lappy> <445CA907.9060002@cyberone.com.au> <1146929357.3561.28.camel@lappy> <1147116034.16600.2.camel@lappy> <1147207458.27680.19.camel@lappy> <20060511080220.48688b40.akpm@osdl.org> <20060511164448.4686a2bd.akpm@osdl.org> In-Reply-To: <20060511164448.4686a2bd.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Linus Torvalds , clameter@sgi.com, a.p.zijlstra@chello.nl, piggin@cyberone.com.au, ak@suse.de, rohitseth@google.com, mbligh@google.com, hugh@veritas.com, riel@redhat.com, andrea@suse.de, arjan@infradead.org, mel@csn.ul.ie, marcelo@kvack.org, anton@samba.org, paulmck@us.ibm.com, linux-mm@kvack.org List-ID: Andrew Morton wrote: > Linus Torvalds wrote: > >>What happened to the VM stress-test programs that we used to test the >>page-out with? I forget who kept a collection of them around, but they did >>things like trying to cause MM problems on purpose. > > > I think that was me, back in my programming days. > > >>And I'm pretty sure >>some of the nastiest ones used shared mappings, exactly because we've had >>problems with the virtual scanning. > > > http://www.zip.com.au/~akpm/linux/patches/stuff/ext3-tools.tar.gz > > run-bash-shared-mapping.sh is a good stress-tester and deadlock-finder. > > Running fsx-linux (in mmap-read and mmap-write and read and write mode) in > combination with memory pressure is a good correctness-tester. Needs to be > run on various filesystems too. Well for what its worth (and from this thread it may not be that much) the testing I did over night shows green across all the test boxes I have. The tests do include fsx-linux across a limited range of filesystems. I'll see if I can get the other one done. -apw -- 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