Hi!
> I suppose the problem is of different nature. The problem is that
> the caches are not dropped after performing 'dd'. And since dd is executed
> in root cpuset (at the beginning of the testcase where no other cpusets 
> are defined),
> these caches are spread among all memory nodes.
> 
> The test process is placed in desired cpuset. It reads DATAFILE (which is
> already in memory, since the caches are in memory), but this reading 
> doesn't increase
> memory consumption.
> 
> And delta (memory consumption after mem_hog's reading - memory 
> consumption before mem_hog's
> reading taken on each node) is equal to zero (approximately). So the 
> testcase fails.

Ah, that explains it. Thanks for the detailed description (and don't
forget to add this information into the corresponding git commit
message).

-- 
Cyril Hrubis
[email protected]

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