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At openBSD we have the command:
sudo sysctl kern.bufcachepercent
This sets the percent of the RAM that will be dedicated to be HD cache. How do I do that at linux Ubuntu?
Or how to mount some folder at RAM?
here’s my 2 cents:
first of all I don’t think there’s an exact counterpart for bufcachepercent in Linux kernel. Anyway you can take a look here: vm.txt where there are some explanations on the various parameters related to vm (I think you wanna check “dirty_*”, “vfs_cache_pressure” and maybe “swappiness”).
Hope this helps =)