NGram Analyzer and Huge CPU Usage under 50 req/sec

Hey everyone,
I have some trouble with ngram analyzer and its cpu usage.
The problem is I have two fields:

  • one of them is analyzed by standard analyzer
  • second is analyzed by standard analyzer and NGram filter.

When I run a load test with a query over the first field I can see 600 reqs/sec
Same query over the other field only goes to 50 reqs/sec.

I create a detailed thread over stackoverflow, one of the users direct me to this forum. so I directly put the link of it:

I hope someone can give an advice about that because we need to give a decision before going to production with that schema.

Mehmet -