Hello, We have dozens of DS18B20 temperature sensors at 3 telescopes. I'd like to poll them and cache the results so that other programs can retrieve the latest temperatures with less than 50ms delay. It doesn't matter if the values are a few minutes old; just that clients don't have to wait for a response. I am using owserver 3.1p0 on CentOS 6.5 64bit with a LinkHub-E.
Is it possible to configure owserver to continuously poll devices on it's own? The owserver cache works but of course once a value in the cache expires the next request for it forces a read of the device, making the client wait about 800ms. If owserver can be set to poll devices then I can set the expire time such that this usually never happens. I tried having a background program poll the uncached values in owserver more often than the volatile timeout so that the cached values are never considered expired. However, a client still has to wait for a cached value if it is currently being read out due to an uncached request, even if the cached value isn't expired. If that was changed I think this would work. Any suggestions on how to setup polling so that a client can always get a cached value immediately? I have a feeling I'll need to either modify owserver or write my own server wrapper. Thanks, Alex -- Alex R. Gibbs - agi...@lpl.arizona.edu Principal Engineer - Catalina Sky Survey Lunar & Planetary Lab - University of Arizona -- ------------------------------------------------------------------------------ Monitor Your Dynamic Infrastructure at Any Scale With Datadog! Get real-time metrics from all of your servers, apps and tools in one place. SourceForge users - Click here to start your Free Trial of Datadog now! http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
