From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Woodhouse Subject: Re: [PATCH 0/1] Embedded Maintainer(s), linux-embedded@vger list Date: Tue, 10 Jun 2008 14:53:28 +0100 Message-ID: <1213106008.32207.784.camel@pmac.infradead.org> References: <20080610075432.GB776@uranus.ravnborg.org> <20080610090924.150D9248AC@gemini.denx.de> <20080610131236.GC28565@shareable.org> <87a5b0800806100625m5a6d20dao47b884bff663c24c@mail.gmail.com> <1213104800.32207.778.camel@pmac.infradead.org> <87a5b0800806100647r178e54c0qd34cbf26f6ce24d@mail.gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <87a5b0800806100647r178e54c0qd34cbf26f6ce24d@mail.gmail.com> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Will Newton Cc: Jamie Lokier , Wolfgang Denk , Sam Ravnborg , Rob Landley , Leon Woestenberg , linux-embedded@vger.kernel.org On Tue, 2008-06-10 at 14:47 +0100, Will Newton wrote: > On Tue, Jun 10, 2008 at 2:33 PM, David Woodhouse wrote: > > On Tue, 2008-06-10 at 14:25 +0100, Will Newton wrote: > >> Using a kernel compile as a test isn't such a great idea. Stress tests > >> of that kind are not particularly useful for pinning down bugs - so > >> your kernel compile failed, what now? Far better to use LTP tests or > >> similar that are designed to be reproduceable and tunable for your > >> system. For example I don't think I'll ever be able to self host a > >> kernel build on a board with only 32Mb of on-board RAM. > > > > Actually, cross-building on NFS does tend to find a _lot_ of issues > > which crop up with board ports; especially PCI arbitration, DMA > > coherency, cache and MMU issues. LTP often doesn't catch the same > > problems. > > It may trigger a number of bugs, I don't disagree, but as a test it is > a blunt instrument. Yes, it's a blunt instrument, but blunt instruments are often effective. I disagree with your claim that using it as a test isn't a good idea. I would, however, grant you that using it as your _only_ test is a bad idea :) -- dwmw2