Plugin
free_memory.sh need to run manually from time to time, there is a way

plugin
crond.
Crond plugin allows you to automatically run the command, in which case we will clean the memory every two minutes (quicker you can not) Plugin
crond had packed together with a plugin
free_memory.sh 
simply upload via USB or if you prefer via ftp

Two plug-ins may run in Spark and ready, from now on
free_memory.sh plugin is run every two minutes
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