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Unexpected response data from server in SharePoint 2013

All I was doing was writing JavaScript Object Model (JSOM) to write data to a list in SharePoint 2013. It was fairly a simple program which uses HTML for data capture and SP.JS & JQuery to push the data to List. The program was successful with data being pushed to List. All of a sudden, the same program started throwing error. In catch block (to be specific, kind of QueryFailed function), I was displaying args.get_message() and args.get_stackTrace().

This is what I was getting as a response.
args.get_message = "Unexpected response data from server"
args.get_stackTrace = null

After digging into internet, got a clue that it must be something related to noderunner.exe.
When I checked in the server, several instances of this process were running and my RAM was almost full. Since I was not using Search, I stopped "SharePoint Server Search 15" and "SharePoint Search Host Controller" services. After this, RAM usage got reduced and my program started working. In case you get similar error, do look at server RAM as well.

There are some links which discuss about noderunner.exe and am listing a couple of them here for your reference.
http://social.technet.microsoft.com/Forums/sharepoint/en-US/c7ad0ff9-560d-45ad-99cf-dc642ca4c66e/100-cpu-utilization-issue-on-sp-2013-anyone-else-have-this-issue

http://www.dotnetmafia.com/blogs/dotnettipoftheday/archive/2012/07/24/where-s-all-my-memory-in-sharepoint-2013-preview.aspx
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