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Mysterious prefetching behaviour

This is by no means a serious problem but might make an interesting question for technical people.

I have star wars squadrons installed on a HD (via origin) and I don't play it frequently. Looking in resource monitor I see that the runtimebroker keeps loading the 500MB exe file into the IO cache (confirmed via RAMMAP), either from a fresh reboot or when something else has cleared the cache.

 

I looked in the prefetch folder with a decoding tool and I don't see any references to this file.

 

While this isn't a problem it is somewhat odd behaviour as it could cache any number of more useful things. Why is the runtimebroker doing this?

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From Microsoft docs:

https://support.microsoft.com/en-us/windows/runtime-broker-is-using-too-much-memory-ca6ed4e3-2a36-964c-4d2e-8c93980d8a98

 

As explained, runtime broker is related to Store permissions handling (allow/deny access of UWP app from Microphone, camera, personal folders, location, etc.). It is not related to Preferch nor SuperFetch (SysMain) technologies.

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OK I've tweaked some settings, like disabling tips, and I uninstalled some UWP apps. It seems to have stopped doing it. But I'm not sure exactly what was happening.

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