[Hotplug_sig] Re: [Lhms-devel] [PATCH 0/4] Reducing fragmentation using lists (sub-zones) v22

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On Fri, 17 Feb 2006, Bryce Harrington wrote:

> On Fri, Feb 17, 2006 at 11:03:43AM +0000, Mel Gorman wrote:
> > On Tue, 14 Feb 2006, Bryce Harrington wrote:
> > > On Fri, Jan 20, 2006 at 11:54:15AM +0000, Mel Gorman wrote:
> > > > This is a rebase of the list-based anti-fragmentation approach to act as
> > > ...
> > >
> > > Hi Mel,
> > >
> > > By chance do you have a web or ftp site where these patches are posted?
> > >
> >
> > I didn't, but I do now.
> >
> > list-based anti-fragmentation
> > o http://www.csn.ul.ie/~mel/projects/patches/brokenout/mbuddy/v22
> > o Full patch is called full-mbuddy-v22.diff
> > zone-based anti-fragmentation
> > o http://www.csn.ul.ie/~mel/projects/patches/brokenout/zbuddy/v5
> > o Full patch is called zbuddy-v5-full.diff
>
> Great, thanks!
>

Thank you for picking them up.

> > > Also, would you find cross compile testing of your patches to be of
> > > interest?
> > >
> >
> > I would. While I currently have access to the machines needed to
> > cross-compile, I do not have any automated mechanism setup for
> > anti-fragmentation yet so I only test ppc64 and x86. Greater coverage
> > would be ideal.
>
> Okay, great.  We have an automated cross compile system here at osdl
> called PLM, that will now watch for new patches at the mbuddy and zbuddy
> URL's.

Great. They will always be in a vN directory where N is the number of
release.

> The compile results are all posted on the web as soon as they
> run, but I will also try to always review them and identify
> "interesting" results for you (e.g., new warnings or errors beyond what
> the base kernels would have).
>

That would be very handy. I generally try and catch all of these things
before I release, but something will eventually slip through.

> > > (I've been running cross-compile tests for the NFSv4 developers for the
> > > past year and would be happy to do the same for memory hotplug if it
> > > would be of interest.)
> > >
> >
> > I'd appreciate it. However, to be clear, the patches I am working on are
> > for anti-fragmentation which will be of benefit to memory hotplug and for
> > huge tlb. For the memory hotplug patches and the -mhp tree, Dave Hansen is
> > the man to talk to.
>
> Yup, actually we've been pulling Dave's patches for a while.  But since
> we've already got the tools set up and automated, they can handle some
> more work.  ;-)
>

Suits me just fine.

> Also, if you know of any regression or performance tests that you'd find
> useful to have run automatically for anti-fragmentation (or other
> memory-related aspects), I could work on setting those up to run on x86,
> and later x86_64 and ia64.
>

The tests I always run are posted with each patch. On VMRegress, they
correspond to bench-kbuild, bench-aim9, bench-stresshighalloc,
bench-hugetlbcap and more recently bench-hotremovecap. However, I'm
interested in any performance figures or reports you are willing to
generate on as many platforms as possible.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab

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