this post was submitted on 21 Mar 2025
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Performance tanking during swapping (lemm.ee)
submitted 2 weeks ago by iturnedintoanewt@lemm.ee to c/linux@lemmy.world
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Hi guys!

I have what I'd consider a beefy gaming PC. AMD 7700 CPU, 32GB RAM, 7800XT 16GB, NVMe 1TB for OS, mSATA SSD 2TB for storage/games.

So...whenever I get a while using the computer, with a bunch of windows open, say firefox taking 4GB of RAM, total for everything a bit over 16GB...I'm prone to get a whole system slowdown/freeze, which can take a few full minutes until it settles. I can see the storage red led on the whole time without blinking, so it really looks like swapping.

However sometimes I don't see movements in the system process viewer, in usage from RAM/swap, I'd imagine those graphs would change if the data in swap has changed.

Swapping is set in the mSATA, taking 8GB, so I reckon that migth not be the fastest. Still, that's an SSD. I'm not sure how can I check/troubleshoot whatever is tanking my computer performance?

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[–] nanook@friendica.eskimo.com 1 points 6 days ago

If you are running Linux, I would recommend maxing out the amount of RAM that your CPU supports. Memory I/O is faster than the fastest SSD, and Linux will use all RAM not being used for something else for buffers and cache putting write in the background so you don't have to wait upon them. Also consider using a modern kernel and tailoring it to your processor, use the -march argument for your architecture in the compile, this will utilize your CPU to it's fullest.