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Subject: Re: What's up with the swapping since 10/stable
From: Johan Broman <johan@bridgenet.se>
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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=