Do you check to make sure your existing swap usage and RAM usage combined does not equal a number higher than the amount of total RAM you have on the system? I am guessing flushing swap into RAM when there is not enough RAM available is a bad thing to do. Just curious, why do you clear your swap space like that periodically? If your swap is being used too much, perhaps you either need more RAM or else should maybe turn down your vm.swappiness in sysctl. On 2017-09-18 04:07 PM, Jeff Chapin wrote: > I periodically check swap usage, and run: > > sudo swapoff -a; sudo swapon -a; > > This will force anything in swap (on disk) back into RAM. > > Jeff > > On Mon, Sep 18, 2017 at 4:05 PM, Steve Trapp <stevetrapp at comcast.net> wrote: > >> Aha. I tried 'man swap' but didn't think of 'swapon'. My google search was not >> very productive, so I am thankful of your information! -Steve >> >> On Mon, Sep 18, 2017 at 07:16:16PM +0000, Iznogoud wrote: >>>> >>>> For GNU/Linux, how do you turn swap off and how do you turn in back on again? >>>> >>> >>> Here is the top of the manual page: >>> >>> >>> NAME >>> swapon, swapoff - enable/disable devices and files for paging and swap- >>> ping >>> >>> SYNOPSIS >>> /sbin/swapon [-h -V] >>> /sbin/swapon -a [-v] [-e] >>> /sbin/swapon [-v] [-p priority] specialfile ... >>> /sbin/swapon [-s] >>> /sbin/swapoff [-h -V] >>> /sbin/swapoff -a >>> /sbin/swapoff specialfile ... >>> >>> _______________________________________________ >>> TCLUG Mailing List - Minneapolis/St. Paul, Minnesota >>> tclug-list at mn-linux.org >>> http://mailman.mn-linux.org/mailman/listinfo/tclug-list [1] >> -- >> Name: Steve Trapp >> Location: Just east of the Missippi River >> Email-address: stevetrapp<AT>comcast<DOT>net >> Homepage: comcast DROPPED ALL HOMEPAGES--Where do I put my PGP public key now? >> >> _______________________________________________ >> TCLUG Mailing List - Minneapolis/St. Paul, Minnesota >> tclug-list at mn-linux.org >> http://mailman.mn-linux.org/mailman/listinfo/tclug-list [1] > > -- > Jeff Chapin > President, CedarLug, retired > President, UNIPC, "I'll get around to it" > President, UNI Scuba Club > Senator, NISG, retired > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list Links: ------ [1] http://mailman.mn-linux.org/mailman/listinfo/tclug-list -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20170918/a92a2e03/attachment-0001.html>