Lag time for Philips Hue Bulbs

[jimbodude]

I'm just getting started with openHAB.  So far, I have it running, and my only items are three Philips Hue bulbs.  I'm noticing about a 5 second delay from the time when the command appears in the OSGi console output to the time when the change starts taking effect at the bulb.  It happens no matter what the command is - OFF, specific settings, ON.  From the Hue/openHAB demo video, it doesn't seem like it should be that long - looks like closer to 1/2 second or less, which would be great.

Here is my items file:
Color hueA "hueA" (Colorize) {hue="1"}
Color hueB "hueB" (Colorize) {hue="2"}
Color hueC "hueC" (Colorize) {hue="3"}

I'm sending commands through the REST API with curl, like this:
curl -i -H "Content-Type: text/plain" -X POST -d "OFF" http://192.168.0.248:8080/rest/items/hueC
curl -i -H "Content-Type: text/plain" -X POST -d "357.41177,100.0,10.0" http://192.168.0.248:8080/rest/items/hueC
curl -i -H "Content-Type: text/plain" -X POST -d "357.41177,100.0,100.0" http://192.168.0.248:8080/rest/items/hueC

I'm running on a Raspberry Pi, model B running the rasbian disro from http://www.raspberrypi.org/downloads (not NOOBS).  meminfo says:
MemTotal:         237052 kB
MemFree:           23140 kB

Both the Hue Bridge and RPi are on the same hardwired network.

Any idea where this lag comes from or how to narrow it down?  Or is the RPi just not powerful enough to handle even this simple task?

Thanks in advance.

[Kai Kreuzer]

Hi,

I assume you are using openHAB 1.3.x?

I have done some improvements end of October on the 1.4 snapshot, see https://github.com/openhab/openhab/pull/58

So please check if it still occurs with the current snapshot version (from https://openhab.ci.cloudbees.com/job/openHAB/) - if so, please let us know!

Cheers,

Kai

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[James Cialdea]

Yes, 1.3.1, how did I forget to include that... I'll pull a snapshot and see how that goes.

Also, from other recommendations, I'm using Oracle jdk 1.8 pre release. I didn't try other jdk versions yet.

JCialdea

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[jimbodude]

1.4 seems to have cured it.  Thanks for the suggestion there, and nice fix.