Cant disable debug

Elastic Stack Logstash
1

I added switch --quiet but still i get these strange lines...:

    Okt 22 15:23:53 server logstash[28752]: D, [2016-10-22T15:23:53.734000 #28752] DEBUG -- : SENDING:
Okt 22 15:23:53 server logstash[28752]:
Okt 22 15:24:52 server logstash[28752]: D, [2016-10-22T15:24:52.268000 #28752] DEBUG -- : SENDING:
Okt 22 15:24:52 server logstash[28752]:
Okt 22 15:24:53 server logstash[28752]: D, [2016-10-22T15:24:53.736000 #28752] DEBUG -- : SENDING:
Okt 22 15:24:53 server logstash[28752]:
Okt 22 15:25:52 server logstash[28752]: D, [2016-10-22T15:25:52.272000 #28752] DEBUG -- : SENDING:
Okt 22 15:25:52 server logstash[28752]:
Okt 22 15:25:53 server logstash[28752]: D, [2016-10-22T15:25:53.738000 #28752] DEBUG -- : SENDING:
2

That doesn't look like Logstash log entries at all. Which version of Logstash? Are you starting it via systemd?