Exec binding refresh interval problem

Add-ons Bindings
1

All my items that uses exec binding get some strange refresh interval.

For example with this item:
String GerkonStatus { exec="<[curl -s http://172.16.1.35/?gerkon:1000:REGEX((.*?))]" }

i’m geting this in the log:
tail -f /var/log/openhab/events.log | grep GerkonStatus
2016-04-23 11:59:36 - GerkonStatus state updated to 1
2016-04-23 11:59:51 - GerkonStatus state updated to 1
2016-04-23 12:00:12 - GerkonStatus state updated to 1
2016-04-23 12:00:19 - GerkonStatus state updated to 1
2016-04-23 12:00:40 - GerkonStatus state updated to 1
2016-04-23 12:00:58 - GerkonStatus state updated to 1
2016-04-23 12:01:08 - GerkonStatus state updated to 1
2016-04-23 12:01:20 - GerkonStatus state updated to 1
2016-04-23 12:01:46 - GerkonStatus state updated to 1
2016-04-23 12:02:02 - GerkonStatus state updated to 1
2016-04-23 12:02:22 - GerkonStatus state updated to 1

This doesn’t look like one second refresh.
Coul’d you advise me where should i look?

2

Are you sure the server (http://172.16.1.35) has the ability to serve the same address once a second?

3

Good question. Thanks!
I’ve just tried some trickes with my another device which supports both “curl” and “http” requests.

And i’ve got this:
Switch LightBraKoHTTP { http="<[http://172.16.1.15/sec/?pt=9&cmd=get:1000:REGEX((.*))]" }

tail -f /var/log/openhab/events.log | grep LightBraKoHTTP
Log:
2016-04-23 15:14:50 - LightBraKoHTTP state updated to OFF
2016-04-23 15:14:51 - LightBraKoHTTP state updated to OFF
2016-04-23 15:14:52 - LightBraKoHTTP state updated to OFF
2016-04-23 15:14:53 - LightBraKoHTTP state updated to OFF
2016-04-23 15:14:55 - LightBraKoHTTP state updated to OFF

Switch LightBraKoCurl { exec="<[curl -s http://172.16.1.15/sec/?pt=9&cmd=get:1000:REGEX((.*))]" }

tail -f /var/log/openhab/events.log | grep LightBraKoCurl
Log:
2016-04-23 15:17:18 - LightBraKoCurl state updated to OFF
2016-04-23 15:17:48 - LightBraKoCurl state updated to OFF
2016-04-23 15:18:10 - LightBraKoCurl state updated to OFF
2016-04-23 15:18:36 - LightBraKoCurl state updated to OFF
2016-04-23 15:18:59 - LightBraKoCurl state updated to OFF

What about device 172.16.1.35 i’v tried this command:
while sleep 1; do curl -s http://172.16.1.35/?gerkon; echo “”; date; done

output is:
1
Sat 23 Apr 16:31:08 CEST 2016
1
Sat 23 Apr 16:31:09 CEST 2016
1
Sat 23 Apr 16:31:11 CEST 2016
1
Sat 23 Apr 16:31:12 CEST 2016
1
Sat 23 Apr 16:31:13 CEST 2016
1
Sat 23 Apr 16:31:14 CEST 2016
1
Sat 23 Apr 16:31:16 CEST 2016

So the answer is yes it can serve.
There is some other kind of problem.