Yonik Seeley wrote:
There is no real document boost at the index level... it is simply
multiplied into the boost for every field of that document.  So it
comes down to what fields you want that index-time boost to take
effect on (as well as length normalization).

Come to think of it, I do have two large indexes that don't really need any document boosting, could perhaps save some memory there...

But what I still don't understand is why the amount of memory that is used by SegmentReader.Norm.bytes keeps growing -- at first quite fast to about 150mb, then slower.

After startup:

11 x SegmentReader.Norm.bytes = 17mb


After searching some indexes once or twice times:

78 x SegmentReader.Norm.bytes = 79mb
 5 x SegmentReader.ones       = 16mb


After a few dozen queries on one of the indexes:

58 x SegmentReader.Norm.bytes = 158mb
 5 x SegmentReader.ones       = 16mb

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