I am afraid this is an ".. it depends" question. If you work with large images or data sets, swap can be really handy. If you are doing a little programming, web browsing, reading email you will *probably* be ok, but why risk it?
I have a 32gb ram in a master server for an mfs filesystem - it normally sits at about 5GB of ram - however it can go well over 32Gb into swap at times - the first machine I tried it with only had 4gb ram and crashed when it filled the ram, and 8g swap taking the test file system with it - its now production so I am not going to risk it by underprovisioning swap. My 32Gb desktop is not using any swap at the moment ... but it has used it at times. So, yes its quite likely you wont use swap - but if you do something that needs it, it can help avoid a very messy crash. Swap is slow, but if you actually need it - its probably critical that you have it! Unless you are really short of disk space, treat it as insurance :) Look into using swapfiles instead of partitions for flexibility, and the sysctl values of "vm.swappiness" and "vm.vfs_cache_pressure" to manage swap usage (you can set to not use swap until it really has to - some have seen the kernel being too eager to swap out causing slowdowns, though you can make it go in the other direction and "thrash" when it actually needs to use swap if you go to far. The default kernel swap mechanism isn't really that bad! So yes, most of my machines don't need swap *right now* and swap looks like its not being used so it could be removed, but I cant guarantee that they never will, and having years of experience using swap I recommend that its better to be cautious and survive :) BillK On 2/5/20 3:50 am, Raphael MD wrote: > Hello! > > Could I turn my Linux swap off. > I have 32 GB of RAM memory, I suppose my system don’t need swap, > because I’vea lot of RAM, is this true? > > Thanks > -- > M.S. Raphael Mejias Dias > Nuclear Engineer | Reactors > > Secure e-mail: raphael.mejias.d...@protonmail.com > <mailto:raphael.mejias.d...@protonmail.com> > PGP Key for raph...@gmail.com <mailto:raph...@gmail.com>: > https://pgp.mit.edu/pks/lookup?op=get&search=0x87BC5A746072F951
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