I've noticed recently that sometimes my Windows 8.1 system, when left running for a while gradually gets more sluggish. It's noticeable in all applications - Firefox takes several seconds to switch between tabs, for example. Memory usage becomes very high (sometimes more than 90%) with no actual applications open, apart from the background programs and services. The only thing that successfully gets the system back to normal is a reboot. The computer has also crashed sometimes when it has been in this high memory usage state - generally it crashes during waking up from sleep.
How would I go about diagnosing what was causing this?
I used Process Explorer and took a couple of screenshots. They weren't much help to me as it's not obvious where the memory is being used in the second screenshot, but perhaps someone might know what to look for? Or perhaps someone knows of a better tool for analysing memory use?
Thanks for any help you can give.
Shot 1 - Computer recently started, 24.7% physical memory use, just Firefox open (and background apps)
Shot 2 - Computer been running for a day or so, 78.1% physical memory use, no applications open.
The computer is a recent build, it has 8Gb DDR3 memory. Happy to provide any other info required.
Edited by jonuk76, 27 July 2014 - 06:55 AM.