Wednesday, July 6, 2016

[Solution] All Physical memory being used but nothing showing in task manager

All Physical memory being used but nothing showing in task manager

Hi I have windows 7 64 bit fresh install as of yesterday (fully updated) and experiencing a performance issue.
When I look under task manager 95% of my physical memory (3.5 gb out of 4gb) is being used but there are no tasks that are using the memory.
I have selected show task for all users and again nothing is using the 3.5 gb of memory.
It is a pretty clean install (just have virus checker and Skype, steam installed) so no chance of a virus.
I have check my page file and it is configured for windows to
automatically mange page file.


Things I have tried:- Stopped all of the service that I can (no change)
manually configure the page file (no change)
Reinstalled windows 7 (problem eventually comes back once all of the updates have been applied)

Any help is greatly appreciated.


Thanks

Solutions to the Problem All Physical memory being used but nothing showing in task manager

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This problem plagued me for much longer, and required much more effort to resolve, than it should have.  I have been running an 8 core, 12 GB Dell that would go from 4ish GB to 11.5GB in the matter of 10 minutes, without any warning.  Google searches led
to a plethora of failed attempts including shutting down the Windows Media Player service, uninstalling VMWare, and removing AVG anti-virus software.  The problem didn't budge.  One aspect of the problem that I noticed was that I was using much more RAM on
start-up, and overall hard-drive space, than I anticipated.

I believe your culprit is Window 7 itself:  the Windows Search service.
From what I can glean, if you do a lot of computationally heavy work which creates a lot of temporary files, or have a large number of files (not large files per se, but a large number
of files) on your hard drive(s), when this service kicks in, it attempts to index them, and store the resulting index in memory for quick searching.  This leads to two problems:

(i) a huge Windows.edb (basically, the physical file representing the index) 
(ii) a massive amount of used memory (which doesn't show on task manager), when this file (or aspects of it) is loaded into memory

A nice tool, which in fact on a MS hosted site and should be much more accessible, to see your ACTUAL RAM usage is RAMMap http://technet.microsoft.com/en-us/sysinternals/ff700229.  This will show you the offending culprit.

Blowing away the service and the Windows.edb file not only solved the problem of interest, but added 70GB to my hard drive, and lowered my startup RAM usage to 2.5GB (from 4.5GB)!  Here is a good starting point:
http://www.howtogeek.com/howto/10246/how-to-disable-search-in-windows-7/

For the record, I find it to be bad OS development to allow a system file to get in the realm of hundred of MBs, and really awful development to get into GBs.  A 70GB (almost 12% of the total hard drive size) OS file speaks volumes for Windows 7 development.

Run CHKDSK
  • Go to the Start button.
  • In the Search box, type "cmd" (without quotes) and press Enter.
  • At the command prompt, type "chkdsk /r /f" (without quotes) and press Enter.
  • Reboot your computer.

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