Details about "Non-zero metrics in the last 30s" Filebeat Reported

Can someone explain me what is each metric about?

{"monitoring": {"metrics": {"beat":{"cpu":{"system":{"ticks":1390,"time":{"ms":22}},"total":{"ticks":2780,"time":{"ms":42},"value":2780},"user":{"ticks":1390,"time":{"ms":20}}},"handles":{"limit":{"hard":16000,"soft":16000},"open":17},"info":{"ephemeral_id":"eq124fa9-xrsd-123ed-959e-40454dff9efa","uptime":{"ms":1920025}},"memstats":{"gc_next":8552400,"memory_alloc":7000480,"memory_total":242428288}},"filebeat":{"events":{"active":-9,"added":74,"done":83},"harvester":{"open_files":6,"running":6}},"libbeat":{"config":{"module":{"running":0}},"output":{"events":{"acked":83,"batches":10,"total":83}},"outputs":{"kafka":{"bytes_read":2864,"bytes_write":45395}},"pipeline":{"clients":9,"events":{"active":0,"published":74,"total":74},"queue":{"acked":83}}},"registrar":{"states":{"current":7,"update":83},"writes":{"success":10,"total":10}},"system":{"load":{"1":0.06,"15":0.19,"5":0.16,"norm":{"1":0.0011,"15":0.0034,"5":0.0029}}}}}}

Is there any overhead of enabling these internal metrics, may be 10 sec interval?