What are the memory requirements of Nextant and are there any limitations?

NC 11.0.1 on Ubuntu 16.04 x64, 2 GB RAM, 1 GB swap
Nextant 1.0.3

In my example, user2 has uploaded 500GB+ (150.000+ files) of data to NC.

It’s no more possible to index the files of that user. The load of the server goes up to 50 or more and after a while the process will be killed.

In the root files-directory of that user is a .noindex file

sudo www-data php occ nextant:index

nextant v1.0.3
* Extracting files:
/user1                           0/     0 [>---------------------------]   0% 
Getötet

At the moment, the app is not useable anymore.

What can i do to use the app properly again?

How can i exclude certain folders from indexing?

Thank you.

sudo -u www-data php occ nextant:check

Pinging 127.0.0.1:8983/solr/nextant : ok

Checking Solr schema fields
 * Checking field-type 'boolean' : ok
 * Checking field-type 'booleans' : ok
 * Checking field-type 'double' : ok
 * Checking field-type 'doubles' : ok
 * Checking field-type 'tdouble' : ok
 * Checking field-type 'tdoubles' : ok
 * Checking field-type 'float' : ok
 * Checking field-type 'floats' : ok
 * Checking field-type 'tfloat' : ok
 * Checking field-type 'tfloats' : ok
 * Checking field-type 'int' : ok
 * Checking field-type 'ints' : ok
 * Checking field-type 'tint' : ok
 * Checking field-type 'tints' : ok
 * Checking field-type 'long' : ok
 * Checking field-type 'longs' : ok
 * Checking field-type 'tlong' : ok
 * Checking field-type 'tlongs' : ok
 * Checking field-type 'string' : ok
 * Checking field-type 'strings' : ok
 * Checking field-type 'tdate' : ok
 * Checking field-type 'tdates' : ok
 * Checking field-type 'ignored' : ok
 * Checking field-type 'text_general' : ok
 * Checking field-type 'text_general_edge' : ok
 * Checking field-type 'text_general_word' : ok
 * Checking field '_version_' : ok
 * Checking field 'id' : ok
 * Checking field 'text' : ok
 * Checking field 'text_edge' : ok
 * Checking field 'text_word' : ok
 * Checking field 'nextant_path' : ok
 * Checking field 'nextant_owner' : ok
 * Checking field 'nextant_mtime' : ok
 * Checking field 'nextant_share' : ok
 * Checking field 'nextant_sharegroup' : ok
 * Checking field 'nextant_deleted' : ok
 * Checking field 'nextant_source' : ok
 * Checking field 'nextant_tags' : ok
 * Checking field 'nextant_extracted' : ok
 * Checking field 'nextant_ocr' : ok
 * Checking field 'nextant_unmounted' : ok
 * Checking dynamic-field 'ignored_*' : ok
 * Checking dynamic-field 'nextant_attr_*' : ok
 * Checking copy-field 'text_edge/text' : ok
 * Checking copy-field 'text_edge/text_word' : ok

Cleaning extra fields

Your solr contains 131 documents :
 - 131 files
 - 0 bookmarks
 - 19 segments