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On Saturday, 2 May 2020 00:08:24 BST Raphael MD wrote: |
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> On Fri, 1 May 2020 at 18:49 J. Roeleveld <joost@××××××××.org> wrote: |
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> > On 1 May 2020 21:50:02 CEST, Raphael MD <raphaxx@×××××.com> wrote: |
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> > >Hello! |
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> > > |
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> > >Could I turn my Linux swap off. |
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> > >I have 32 GB of RAM memory, I suppose my system don’t need swap, |
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> > >because |
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> > >I’vea lot of RAM, is this true? |
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> > > |
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> > >Thanks |
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> > |
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> > This question keeps getting asked every time people go past some imaginary |
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> > large figure of RAM. |
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> > |
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> > First time I encountered it was somewhere in the 1990s. A friend had a |
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> > machine with 64MB ram, a massive amount at that time, and disabled all |
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> > swap. He was surprised his machine crashed because of memory issues, |
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> > until I asked what he was running. The list included several memory |
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> > intensive applications. |
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> > He never asked that again and adds it to all his machines. |
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> > |
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> > My desktop has 32GB and also has some swap. I do regularly see it used and |
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> > not because of memory leaks like Dale is mentioning, although those do |
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> > appear on occasion. On my desktop it's mostly because I have a lot of |
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> > stuff |
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> > running the whole time. |
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> > |
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> > So, yes, you still need swap and always will. Unless you put about 10 |
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> > times the current magical figure in a desktop. In my view, that would be |
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> > 320GB for now, and in another 5 years, that would be around 640GB. |
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> > When you have that level of overkill in a desktop, I will not consider OOM |
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> > to be likely. |
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> > |
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> > |
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> > -- |
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> > Joost |
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> > |
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> > -- |
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> > Sent from my Android device with K-9 Mail. Please excuse my brevity. |
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> |
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> Well, it’s figuring that some sort of swap space is necessary, but |
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> regarding pressure level on kernel, can I setup it to zero or I’m obligated |
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> to put some number because I’ve a swap file? |
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> |
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> Thanks |
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|
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Only you know how you're using your PC and if the 32G of RAM can/will be used |
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up at some point. I can assure you if you decide to compile chromium with |
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some silly --jobs number, you *will* run out of memory and wish you had set |
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some swap at the time. I don't think I have ever regretted having swap in |
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place and still revisit old systems I should have retired years ago to add |
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some more swap to make sure a memory hungry application or compilation can run |
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and complete without OOM errors. |
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