Date: Tue, 8 Apr 2014 10:57:04 +0200 From: Johan Broman <johan@bridgenet.se> To: Dmitry Sivachenko <trtrmitya@gmail.com> Cc: stable-list freebsd <freebsd-stable@freebsd.org> Subject: Re: What's up with the swapping since 10/stable Message-ID: <CE1551B9-E6D4-4160-B2C8-6F907D615EF0@bridgenet.se> In-Reply-To: <5B77B062-F3BA-4AB4-A20A-65A599968AA9@gmail.com> References: <CA%2BD9QhvDsTwosUxUeL2U05dMt%2BKe6kY5BYCNjJo8e8TsfZTsXg@mail.gmail.com> <A4BE503B-ADA9-4F61-893E-79A5F30728A2@bridgenet.se> <533DB9B1.3070500@denninger.net> <CA%2BD9Qhvr%2Bny80J1zSxPNC_bH1gtvJAOxkfmLXxuiFZsRVyXQ3Q@mail.gmail.com> <20140405152855.1cfcf37c87bdff3306d0cd6c@dec.sakura.ne.jp> <5342F61B.4030006@intertainservices.com> <5B77B062-F3BA-4AB4-A20A-65A599968AA9@gmail.com>
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On 07 Apr 2014, at 23:29, Dmitry Sivachenko <trtrmitya@gmail.com> wrote: >=20 > On 07 =D0=B0=D0=BF=D1=80. 2014 =D0=B3., at 23:01, Mike Jakubik = <mike.jakubik@intertainservices.com> wrote: >=20 >> The thing is i don't use ZFS. One of my servers is running on = 9-STABLE with ZFS and uses a fraction of the swap that my desktop does. >=20 >=20 > See this thread: > = http://lists.freebsd.org/pipermail/freebsd-hackers/2014-April/044786.html >=20 > (especially few last messages) >=20 Thanks! Hmmm. In Linux there is the vm.swapiness parameter that dictates = how the vm should prioritise swapping. Although not perfect, is there a = similar tuneable available in FreeBSD? I think it would be useful to be = able to tune this as different workloads will benefit from different = settings. The parameters I=E2=80=99m aware of are: vm.swap_idle_enabled: 0 vm.defer_swapspace_pageouts: 0 I haven=E2=80=99t tried these parameters in FreeBSD 10 yet=E2=80=A6 have = anyone else seen the impact of these? Cheers Johan=
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