On Wed, 2007-05-09 at 10:20 +0900, KAMEZAWA Hiroyuki wrote:
> On Tue, 8 May 2007 17:58:55 -0700
> Andrew Morton <[email protected]> wrote:
>
> > On Wed, 9 May 2007 09:29:12 +0900
> > KAMEZAWA Hiroyuki <[email protected]> wrote:
> >
> > > On Tue, 08 May 2007 16:37:06 -0400
> > > Lee Schermerhorn <[email protected]> wrote:
> > >
> > > > > You probably need a
> > > > > configuration with a couple of nodes. Maybesomething less symmetric than
> > > > > Kame? I.e. have 4GB nodes and then DMA32 takes out a sizeable chunk of it?
> > > > >
> > > >
> > > > I tested on a 2 socket, 4GB Opteron blade. All memory is either DMA32
> > > > or DMA. I added some ad hoc instrumentation to the build_zonelist_*
> > > > functions to see what's happening. I have verified that the patches
> > > > appear to build the zonelists correctly:
> > > >
> > > Thank you. good news.
> > >
> >
> > I'm still cowering in fear of these patches, btw.
> >
> Hmm, the patches looks unclear ?
>
> > Please keep testing and sending them ;)
> >
> Okay. but it seems I need other testers...
>
> I wonder I should drop sysctl of this patch and just support boot option
> in next version.
I think the system still need to be able to rebuild the zonelists at
run-time in response to memory hotplug [someday, maybe?]. And for now,
the sysctl is very useful for testing. And, it does avoid a
reboot--quite expensive, timewise, on large platforms--should one find
that the default order is not appropriate.
Lee
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