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I'm using Codeigniter framework (development version from github) for one of my projects. Project itself is not big just a few controllers and models and I have a memory leak. In 12 hours my rams constantly go up and i have to restart php5-fpm to clean them. Where should I start looking for memory leak? I mean is it loops or variables and what tools can I use for this to investigate?
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To find a memory leak, look at how much RAM the system is using. The Resource Monitor in Windows can be used to accomplish this. In Windows 8.1 and Windows 10: To open the Run dialogue, press Windows+R, then type "resmon" and click OK.
What is a memory leak in PHP? A memory leak in PHP is a condition that causes sections of code to continue using memory even though that memory is no longer needed.
Memory leak occurs when programmers create a memory in heap and forget to delete it. The consequences of memory leak is that it reduces the performance of the computer by reducing the amount of available memory.
A very old question, but for those facing this problem (since it is still a problem for some of us using CodeIgniter)... per the developer: By default, CodeIgniter keeps an array containing your history of queries.
Look into setting save_queries to false in your database configuration.
I had the same problem with a work project and this dramatically reduced our memory usage.
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If you need to find the exact cause of your memory leak, I will suggest you to use a memory profiler like XHProf.
This is the best way to debug the php scripts and what is the cause of memory leak.
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