Date: Sat, 3 Feb 2018 16:18:51 -0500 From: Brandon Allbery <allbery.b@gmail.com> To: Michael Voorhis <mvoorhis@mcvau.net> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: 50 percent swap used, but "ps auxww" output shows no processes swapped out Message-ID: <CAKFCL4USAr8ia6bTqK4dXOAGBJmx51MKZDOPyrcD0Gm1WdWQrg@mail.gmail.com> In-Reply-To: <b4f2f623-4d58-a783-4c6b-5138c6dfcf52@mcvau.net> References: <b4f2f623-4d58-a783-4c6b-5138c6dfcf52@mcvau.net>
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Swapping whole processes out is not really a thing any more. Individual pages are paged to/from memory; if a memory page has no backing file, it will be allocated a block in swap space as its backing storage. (I'm not sure "W" status even means swap; I thought whole-process swapping wasn't even supported any more.) On Sat, Feb 3, 2018 at 4:14 PM, Michael Voorhis <mvoorhis@mcvau.net> wrote: > Hi all, > > I've got an amd64 system running 11.1-STABLE r325027, with something > like 20G of swap. "swapinfo" shows that half the swap is used. > > So of course I'm curious to know which processes have been swapped > out. I'm not using any "tmpfs" filesystems; no ZFS, no huge amounts of > wired-down memory. The system's got 16 processors and 128G of RAM. "ps > auxww" output shows *no* processes that are swapped out (2nd character > in "STAT" field is "W"). Not a single one. The only process with a W in > the stat field at all is the "[intr]" kernel thread. > > What is using the swapspace? > > Please educate me. > > Thanks, > > --MCV. > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > -- brandon s allbery kf8nh sine nomine associates allbery.b@gmail.com ballbery@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net
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