Date: Mon, 18 Jun 2018 13:15:19 +0100 From: tech-lists <tech-lists@zyxst.net> To: freebsd-questions@freebsd.org Subject: Re: lightly loaded system eats swap space Message-ID: <e89ea58d-a8b9-62b4-c719-f017d97fa90e@zyxst.net> In-Reply-To: <c2297794-1b9e-01b7-c568-ab1752c0a49f@ShaneWare.Biz> References: <c8277497-ffcf-0503-490b-96d1b4605af7@zyxst.net> <c2297794-1b9e-01b7-c568-ab1752c0a49f@ShaneWare.Biz>
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On 18/06/2018 07:14, Shane Ambler wrote: > There is `sysctl vm.max_wired` which limits the kernel wired memory, the > arc is then also wired but added on top of that setting, if your guests > are then wiring more ram, you can get too much wired. > > There is a patch in review that attempts to improve arc releasing when > free ram is low. See if this helps - > > https://reviews.freebsd.org/D7538 > > Other than that check that your guest ram + max_wired + arc_max adds up > to less than your physical ram minus some host system ram. Note that > wax_wired is a page count so multiply it by hw.pagesize Thanks for this. I can't apply the diff just yet due to the machine being in service but will let you know how I get on when I can. -- J.
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