Read the statement by Michael Teeuw here.
rpi3 freezes every few days .. need help
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 Anyone ? 
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 @nagaculun sounds like the swap space might need to be enlarged 
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 @sdetweil and how do I do that ? Thanks 
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 @nagaculun now now… google is your friend see https://www.bitpi.co/2015/02/11/how-to-change-raspberry-pis-swapfile-size-on-rasbian/ 
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 @nagaculun Are you using MMM-GoogleTrafficMap? This module has a severe memory leak. Increasing swap memory will not help, as it just shifts the freeze to a later point in time. Other option is to setup a cron job that reboots regularly the RPi. 
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 @Fozi i have a fixed GoogleMapsTraffic module on my github. 
 I submitted it, but it hasn’t been picked up…
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 @sdetweil thanks for the heads up! 
 Didn’t know you fixed it. I’ll give it a try for my next MM version, I’m currenttly planning.
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 @Fozi I dont have the MMM-GoogleTrafficMap. Even just the default clock module has the issue. I setup a cron to reboot every day at 6am; and it happens as well. 
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 Just modify accordingly. Now wait and see. Thanks. 
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 @sdetweil 
 It still freezes even I made the modification.

