How to evaluate memory consumption of indexes

["steve.hostettler" <st...@gmail.com>]

Hello,

after having added a new index, I see a surge of off-heap consumption
(+10GB) but since it is a small index, I am surprised by it. Is there a way
to have more details about what's consuming off-heap?

Thanks in advance



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Re: How to evaluate memory consumption of indexes

["steve.hostettler" <st...@gmail.com>]

Thanks for the answer, did not thing of using the persistence to assess the
size :)



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Re: How to evaluate memory consumption of indexes

[akorensh <al...@gmail.com>]

Hi,
  Use metrics to see what data regions are using off heap.
  https://apacheignite.readme.io/docs/iodataregiondata_region_name

  A small index should not consume that much memory. Try turning on
persistence to 
  see exactly how large your index.bin files are.
https://apacheignite.readme.io/docs/distributed-persistent-store.

  see:
https://cwiki.apache.org/confluence/display/IGNITE/Ignite+Durable+Memory+-+under+the+hood
  and  
https://cwiki.apache.org/confluence/display/IGNITE/Ignite+Persistent+Store+-+under+the+hood

  Use experimental means to determine what is taking off heap.
  Clear out your data and re-load a small amount, note how the off heap
grows, load more data.
  Try loading the data with and without an index.

Thanks,Alex



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