I've run without swap while having 32gb of ram prior, and found things would just be weirdly lagging at times without it. Adding a swap partition removed that, never really found out why. Now I just always add a small swap slice (usually 3-4gb) even if setting swappiness to minimum. I never do suspend/hibernate or anything to swap, as I often have big enough ram that it chewing into ssd space for it wasn't an option. I just sleep the laptops, and my desktops are never really powered down to bother either. -mb On Sat, Sep 22, 2018 at 8:25 AM Bob Elzer wrote: > > 4 - not having swap seems to make some things not work too well > > Swap depends on how much memory you have and how much memory your programs > need. > > Back in the day when ram was less than a gig we would use 2 to 3 times the > ram size for swap. You would add up the number and size of your programs > you needed to run and give it that extra swap knowing that when swapping > started it would slow things down some. > > Nowadays you can have 32, 64, 128gb and more ram. > > Programs are also bigger, but you still figure how much memory the > programs take and add them all up and compare that with your actual ram. > > If you have 32gb of ram and only read mail and only browse google and > PLUG, then you wouldn't really need any swap. But if you keep hundreds of > tabs open, and have a huge memory resident database, and edit images and > video, you may want to have swap. > > If you have 4-8gb of ram I would think 3 to 4 times that for swap. > 16gb ram 1 to 2 times swap. > 32 or more 1 times, depending on what you're doing maybe more. > > > > On Fri, Sep 21, 2018, 1:08 PM Carruth, Rusty > wrote: > >> So, in my limited experience with swapping, here's my conclusions: >> >> 1 - one big (that is to say, at least your ram size, and possibly 2x your >> ram size) swap PARTITION is needed if you want to hibernate or suspend, and >> I think it has to be the first one in your fstab (but I'm not sure on that) >> >> 2 - swap files work fine, but can't be used for suspend/hibernate. >> >> 3 - suspend/hibernate doesn't work with multiple partitions if (the first >> one I think) isn't big enough to hold everything, even if the total swap >> space is plenty big. >> >> 4 - not having swap seems to make some things not work too well, even >> when you're not overflowing in to swap. This one I don't have proof for, >> but it just felt like a no-swap system ran in to walls sooner. >> >> >> >> >> >> -----Original Message----- >> From: PLUG-discuss [mailto:plug-discuss-bounces@lists.phxlinux.org] On >> Behalf Of Matt Graham >> Sent: Friday, September 21, 2018 9:35 AM >> To: Main PLUG discussion list >> Subject: Re: To lvm or not to lvm >> >> .... You might even be able to get away without swap if you don't want >> to do suspend-to-disk. >> >> >> --------------------------------------------------- >> PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org >> To subscribe, unsubscribe, or to change your mail settings: >> http://lists.phxlinux.org/mailman/listinfo/plug-discuss > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss