Your RAM hits 75%. Most apps panic. I wait 30 seconds — just to make sure it's not a game loading screen. Then I free ~500 MB in under a second.
Windows is actually too good at caching. It keeps data in RAM, which is great… until your system starts stuttering because cached junk is eating everything. And it's real: the system file cache can grow until it consumes most of your RAM, pushing everything else out and killing performance.
So I built my first real optimization function in PC Workman. Not aggressive. Not spammy. Just… smart.
How it works
- A background loop checks RAM usage every 10 seconds.
- If usage goes above 75%, it starts counting.
- If it stays high for 30 seconds straight, only then does it trigger.
- If it drops even once, reset. No false alarms.
When it triggers, it hits three layers at once:
- forces Windows to release the file cache (
SetSystemFileCacheSize— yes, that one) - trims memory pressure across processes (
EmptyWorkingSet, pushing unused pages back to the system pool) - a low-level system call (
NtSetSystemInformation— undocumented, but battle-tested)
Result: ~300–900 MB freed, in ~0.8 seconds, with no user interaction.
The real trick isn't the flush. It's the decision when NOT to run it. RAM spikes are normal — games, browsers, even Windows preloading on purpose. So instead of reacting instantly, I built a system that waits, observes, and only acts when the problem is real.
That was the moment PC Workman stopped being a tool… and started acting like a system.
This is the project behind the post. PC Workman is a free, open-source Windows system monitor
with an offline AI assistant - everything described here is real, shipped code.
Download it or read the source.