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Date:      Thu, 5 Jan 2017 10:22:54 +0100
From:      Julien Cigar <julien@perdition.city>
To:        Shane Ambler <FreeBSD@ShaneWare.Biz>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: vfs.numvnodes constantly growing
Message-ID:  <20170105092254.GB15696@mordor.lan>
In-Reply-To: <e54cdd43-59e8-3181-8f11-400047ec1004@ShaneWare.Biz>
References:  <20170104151322.GZ15696@mordor.lan> <e54cdd43-59e8-3181-8f11-400047ec1004@ShaneWare.Biz>

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On Thu, Jan 05, 2017 at 03:27:27PM +1030, Shane Ambler wrote:
> On 05/01/2017 01:43, Julien Cigar wrote:
> > Hello,
> >
> > I've upgraded a bunch of Proliant DL160 Gen8 machines from 10.0-RELEASE
> > to 10.3-RELEASE-p15. They have 64GB of RAM, running UFS, jails, and
> > have some NFS mounts:
> > https://gist.github.com/silenius/4a3005684b998e648ea93c72c3dc7714
> >
> > I'm observing a constant increase (~5/sec) of vfs.numvnodes, getting
> > closer to kern.maxvnodes:
> >
> > jcigar@orval:~/ > sysctl -a|grep -i 'vnodes'|sort
> > kern.maxvnodes: 1165332
> > kern.minvnodes: 291333
> > vfs.freevnodes: 289726
> > vfs.numvnodes: 1008361
> > vfs.vnodes_created: 98017296
> > vfs.wantfreevnodes: 291333
> >
> > any idea what could be the cause of this ?
>=20
> A system that is running. ;)

That's what I thought :)
I was confused by the fact that numvnodes means "in use + free", and not
only "in use"

>=20
>  From man vnode -
> There is a unique vnode allocated for each active file, each current
> directory, each mounted-on file, text file, and the root.
>=20
> So higher vnode counts means a busier machine, more open files...
> constant growth without any drop could be failure to close files.
>=20
> fstat will list open files. so you can find what process has the most ope=
n.
>=20
>=20
> --=20
> FreeBSD - the place to B...Software Developing
>=20
> Shane Ambler
>=20

--=20
Julien Cigar
Belgian Biodiversity Platform (http://www.biodiversity.be)
PGP fingerprint: EEF9 F697 4B68 D275 7B11  6A25 B2BB 3710 A204 23C0
No trees were killed in the creation of this message.
However, many electrons were terribly inconvenienced.

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