Gc overhead on startup

10 indices and 5 shard per index. Only 3 indices are quiet big though, the 7 others are for testing purposes only.

curl -XGET 'localhost:9200/_cat/indices'
green open publication                     Qi2jEOTXS3CCsuPsYXU9dQ 5 0 109241672  7386797   2.2tb   2.2tb
green open family                          1C9eHajeQD2snZTAMY9lvA 5 0 713891178 63638498   2.5tb   2.5tb
green open patent                          NLYUfoxnS8KWb_kW1-5Irg 5 0 741077273 53436097 597.4gb 597.4gb
green open f10family                       FTaBNzMkQ2eNGyJjDAY0Xw 5 0    860664        0   3.2gb   3.2gb
green open extractpatent                   _mJ1vfyYR0iAbqUApNYgXg 5 0      3776        0  14.6mb  14.6mb
green open extractpublication              fMdaefBCSMStSDikUHCTIA 5 0      4326        0   4.9mb   4.9mb
green open f10publication                  M89WU4bySrKDttNMAFxDHw 5 0    131007        0   2.9gb   2.9gb
green open extractfamily                   -m011dJBSj6d8g0Kh7_25g 5 0      3548        0  16.1mb  16.1mb
green open f10patent                       cArV_hQIRVyY4g357pKbiw 5 0    893510        0 756.9mb 756.9mb
green open history                         jcU_bdGrQvGP5yKmi3vJPA 5 0      5090        0   3.4mb   3.4mb