Because the zram bucket is compressed and thus requires typically half the amount of real RAM. So if you have 1GB of RAM and set up a 512MB zram for swap, those 512MB when completely used up will typically only consume 256MB of RAM. So you will end up with 768MB of actual RAM, + 512MB of swap = 1.25GB of RAM instead of 1GB. Tweak ratios to suit your workload, but that's the basic gist of it. On Fri, Oct 12, 2018 at 6:24 PM Fred Gleason <fredg at paravelsystems.com> wrote: > On Oct 12, 2018, at 13:15, Gordan Bobic <gordan at redsleeve.org> wrote: > > It depends on what you are running on that system. If you have 1GB of RAM > and want to run a desktop environment web browser, that'll go pretty poorly > without swap. > > > So how does putting swap on RAM help that situation? You’re not increasing > the overall memory space by doing so, but merely partitioning it into two > different buckets (while also adding the complexity and performance > overhead of accessing the part that is now ‘swap’). > > Cheers! > > > |----------------------------------------------------------------------| > | Frederick F. Gleason, Jr. | Chief Developer | > | | Paravel Systems | > |----------------------------------------------------------------------| > | A room without books is like a body without a soul. | > | -- Cicero | > |----------------------------------------------------------------------| > > _______________________________________________ > Arm-dev mailing list > Arm-dev at centos.org > https://lists.centos.org/mailman/listinfo/arm-dev > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20181012/a0591851/attachment-0006.html>