UpdateTimer precision is lacking

[mweinelt]

With an update timer of 10 seconds topics updates are sometimes quite off the interval.

Maybe related to CPU load?

2017-12-05 16:32:42 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:32:53 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:33:04 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:33:09 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:33:19 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:33:29 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:33:39 hexa/esper/0ab959/bme/temperature 20.93
2017-12-05 16:33:49 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:33:59 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:34:09 hexa/esper/0ab959/bme/temperature 20.94
2017-12-05 16:34:19 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:34:29 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:34:39 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:34:48 hexa/esper/0ab959/bme/temperature 20.96
2017-12-05 16:34:59 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:35:10 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:35:15 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:35:25 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:35:35 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:35:45 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:35:55 hexa/esper/0ab959/bme/temperature 20.97
2017-12-05 16:36:05 hexa/esper/0ab959/bme/temperature 20.98
2017-12-05 16:36:15 hexa/esper/0ab959/bme/temperature 20.98
2017-12-05 16:36:25 hexa/esper/0ab959/bme/temperature 20.98
2017-12-05 16:36:35 hexa/esper/0ab959/bme/temperature 20.98
2017-12-05 16:36:45 hexa/esper/0ab959/bme/temperature 20.98
2017-12-05 16:36:55 hexa/esper/0ab959/bme/temperature 20.98
2017-12-05 16:37:05 hexa/esper/0ab959/bme/temperature 20.99
2017-12-05 16:37:16 hexa/esper/0ab959/bme/temperature 20.99
2017-12-05 16:37:23 hexa/esper/0ab959/bme/temperature 21.00
2017-12-05 16:37:30 hexa/esper/0ab959/bme/temperature 20.99
2017-12-05 16:37:40 hexa/esper/0ab959/bme/temperature 20.99
2017-12-05 16:37:46 hexa/esper/0ab959/bme/temperature 20.99
2017-12-05 16:37:51 hexa/esper/0ab959/bme/temperature 20.99
2017-12-05 16:38:02 hexa/esper/0ab959/bme/temperature 21.00
2017-12-05 16:38:12 hexa/esper/0ab959/bme/temperature 21.01
2017-12-05 16:38:21 hexa/esper/0ab959/bme/temperature 21.00
2017-12-05 16:38:32 hexa/esper/0ab959/bme/temperature 21.01
2017-12-05 16:38:41 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:38:52 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:39:01 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:39:12 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:39:22 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:39:32 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:39:42 hexa/esper/0ab959/bme/temperature 21.03
2017-12-05 16:39:49 hexa/esper/0ab959/bme/temperature 21.01
2017-12-05 16:39:57 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:40:07 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:40:16 hexa/esper/0ab959/bme/temperature 21.02
2017-12-05 16:40:27 hexa/esper/0ab959/bme/temperature 21.04
2017-12-05 16:40:37 hexa/esper/0ab959/bme/temperature 21.04
2017-12-05 16:40:47 hexa/esper/0ab959/bme/temperature 21.04
2017-12-05 16:40:57 hexa/esper/0ab959/bme/temperature 21.05
2017-12-05 16:41:07 hexa/esper/0ab959/bme/temperature 21.05
2017-12-05 16:41:17 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:41:26 hexa/esper/0ab959/bme/temperature 21.05
2017-12-05 16:41:37 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:41:46 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:41:55 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:42:01 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:42:11 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:42:20 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:42:30 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:42:40 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:42:50 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:43:00 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:43:11 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:43:20 hexa/esper/0ab959/bme/temperature 21.08
2017-12-05 16:43:31 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:43:40 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:43:51 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:44:01 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:44:06 hexa/esper/0ab959/bme/temperature 21.06
2017-12-05 16:44:17 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:44:26 hexa/esper/0ab959/bme/temperature 21.07
2017-12-05 16:44:37 hexa/esper/0ab959/bme/temperature 21.07

[fooker]

Can you have a look at the log of this device? There should be one log line for each published message. Maybe you can estimate / measure if these log messages come out with the same jitter...