[LTP] ./testcases/kernel/hotplug/memory_hotplug in LTP vs memtoy

[LTP] ./testcases/kernel/hotplug/memory_hotplug in LTP vs memtoy

[Andi Kleen]

Subrata, Lee,

I was looking at 

ltp/testcases/kernel/hotplug/memory_hotplug/

in LTP and it seems to be just a outdated copy of Lee's memtoy NUMA tester, which 
does not really test any memory hotadd, just NUMA policies.

The ChangeLog just says

CPU and MEMORY HOTPLUG test cases picked up from http://devresources.linux-foundation.org/dev/hotplug/

Is there a real memory hotplug test somewhere or how is this intended to be used?

Thanks,
-Andi


-- 
ak@linux.intel.com -- Speaking for myself only.

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Re: [LTP] ./testcases/kernel/hotplug/memory_hotplug in LTP vs memtoy

[Lee Schermerhorn]

On Wed, 2009-10-07 at 08:08 +0200, Andi Kleen wrote:
> Subrata, Lee,
> 
> I was looking at 
> 
> ltp/testcases/kernel/hotplug/memory_hotplug/
> 
> in LTP and it seems to be just a outdated copy of Lee's memtoy NUMA tester, which 
> does not really test any memory hotadd, just NUMA policies.


Hi, Andi:

Yes, memtoy is really just a tool for making ad hoc calls to various vm
system calls to create/map/mbind/mlock/... memory areas--as you say, for
testing NUMA policies and such.  There is a newer version at:

http://free.linux.hp.com/~lts/Tools/memtoy-latest.tar.gz


> 
> The ChangeLog just says
> 
> CPU and MEMORY HOTPLUG test cases picked up from http://devresources.linux-foundation.org/dev/hotplug/
> 
> Is there a real memory hotplug test somewhere or how is this intended to be used?
> 

Took a look at that page.  Still says "OSDL" :).   Don't know whether
those are "real" memory hotplug tests or whether others exist.

Regards,
Lee


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