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From Marcel Reutegger <mreut...@adobe.com>
Subject RE: Observation throughput
Date Tue, 25 Jun 2013 08:26:56 GMT
> Any reason we only use the kernel diff for big child node lists?

Initially KernelNodeState didn't use MK.diff() at all and would
always fall back to the generic implementation in AbstractNodeState.
To improve performance and reduce memory usage for flat hierarchies
we then introduced the use of MK.diff(). see:

it might indeed be better to ask the MK for the diff earlier and avoid
the comparison of unmodified child nodes.


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