Tvheadend DVR keeps DS from Sleeping?

[maosewitz]

I am running Tvheadend-Testing 4.1.1504-2 Evansport on Synology DS214-play with DSM 6.0-7274 (beta).

My Tvheadend Logfile displays this line every 15 secs:

[ DEBUG]:dvr: checking free and used disk space for config "Default profile" : OK

I believe this is keeping my system from going into sleep mode. Can anyone give me a hint how to get rid of this?