Because swapping to SD card is slow, swapping to zram is fast, and zram only takes about 1/2 of the RAM that it provides. It's basically RAM compression. It works and makes a positive difference, even without exceedingly slow storage. On Fri, Oct 12, 2018 at 5:16 PM Fred Gleason <fredg at paravelsystems.com> wrote: > On Oct 7, 2018, at 07:58, Robert Moskowitz <rgm at htt-consult.com> wrote: > > I have very recently learned about zram-swap. Fedora-29-arm is using it. > It supposedly makes a considerable difference even over HD swap. > > Since many (potential) users of Centos-arm do not have a ready HD, perhaps > we can switch the image from a physical partition to zram? Or at least > instructions to change to this on the wiki. > > > Not to be utterly naive, but why is swap required on such systems at all? > To take core RAM and repurpose it as swap would seem to vitiate the entire > point of having a virtual memory subsystem in the first place. > > Cheers! > > > |----------------------------------------------------------------------| > | Frederick F. Gleason, Jr. | Chief Developer | > | | Paravel Systems | > |----------------------------------------------------------------------| > | Perfection is reached, not when there is no longer anything to add, | > | but when there is no longer anything to take away. | > | -- Antoine de Saint-Exupery | > |----------------------------------------------------------------------| > _______________________________________________ > 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/20181012/72c6784f/attachment-0006.html>