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POCreating Ruby time object causing garbage collection problem
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  1. POCreating Ruby time object causing garbage collection problem
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    copied!<p>I am an absolute newbie without even a computer science background. I am just a mechanical engineer trying to implement a way to remotely monitor the power output (and other output data) of the inverters in the solar power systems we install. So if I say anything exceedingly dumb, I apologize in advance. </p> <p>I'm trying to write a little ruby program that will live in my ror website's database folder. Every 15 minutes (for as long as the system is online producing energy), I want it to poll the data from our customers' inverters (via TCPSocket connection to a gateway connected to customer inverter) and update my website's database file with the new data. The loop I have looks something like this:</p> <pre><code>last_min = Time.new.min while(1) do tsec = Time.new.sec tmin = Time.new.min if ( ( tsec == 0 ) &amp;&amp; ( tmin - last_min == 1 ) ) # test using one minute # poll inverters, update database last_min = tmin end end </code></pre> <p>When I ran it at first, it threw a Segmentation Fault error. Then i put <code>GC.disable</code> up top and it worked fine (until I force quit only after a couple of min), but that was just to see if it was a garbage collection issue which it is and it seems to be the first creation of a time object that triggers the issue (throws the segmentation fault error). I know I obviously can't have garbage collection disabled for an infinite loop. But how do I "clean up after myself" with ruby? Can I free those time objects somehow at the end of every run through the loop? I saw a post about <code>GC.start</code>, but couldn't quite understand how that works. </p> <p>Also is there a way to run my program and see how much RAM it's using as it goes? I would appreciate any and all advice anyone could offer me here. (Including advice about the general architecture of the solar power output monitoring system I described in the beginning!) </p> <p>I have already deeply benefited from looking at all of the posts on here in my journey thus far and I thank you in advance!</p>
 

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