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my thinkpad now has 40gb of ram, what do?
7 months ago · 👍 userfxnet, drh3xx
@drh3xx specifically, the "locator" field shows them as being in two separate channels, but tbh i'm not too worried either way, i just wanted more room for activities/vms and stuff. this being a laptop w one of those low power cpus, i'm not super worried about max performance, i got a ryzen for that 8) · 7 months ago
It's probably showing like that as dual channel is enabled for the first 16GB. If you did a speedtest on a region in the first 16GB and then another above 16GB it would show a difference. · 7 months ago
@drh3xx see i thought that would be the case but according to dmidecode it's in dual channel mode? · 7 months ago
32+8GB? You're losing any dual channel benefits with over half your memory address space. Still sometimes the need for extra RAM outweighs the need for max performance i guess. My x270 only supports a single sodimm and performance is okay for my needs. Wouldn't mind bumping it up to 32GB so I could run a couple of VMs for software compiles, experimentation etc using qcow2 images stored on a RAMDisk. It would save polluting my main install with build dependancies and save on drive wear. · 7 months ago
https://wiki.archlinux.org/title/Preload you might want to use some file preload script/application. This step is not neccessary but should save few seconds (also see: https://xkcd.com/1205/). I would suggest preloading all .cache, .config and .local from $HOME and run some applications in background as daemon (Thunar allows it). · 7 months ago
https://wiki.archlinux.org/title/Preload
@aelspire i might try the cache pressure thingy · 7 months ago
Try running whole OS from RAM 😉
Or try to increase caching on currently installed system by tweaking vfs_cache_pressure (I don't remember which value does what but I think you will find some info on net). It should make difference even in case of SSD. · 7 months ago