Date: Wed, 7 Apr 2010 23:44:31 -0400 From: Rich <rincebrain@gmail.com> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS arc sizing (maybe related to kern/145229) Message-ID: <r2i5da0588e1004072044tbf7553cdl95e6dc2a635c12e@mail.gmail.com> In-Reply-To: <20100408033630.GA69748@icarus.home.lan> References: <z2o5a1151761004071105kb129ca4q7dfd002270d53561@mail.gmail.com> <h2u5da0588e1004071146lf09ef89eo217933f75ec7a88b@mail.gmail.com> <4BBD15E7.5010006@xpam.de> <i2l5da0588e1004072025w953351c1l8400fbd0c1766c5f@mail.gmail.com> <20100408033630.GA69748@icarus.home.lan>
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vm.kmem_size_scale: 3 vm.kmem_size_max: 329853485875 vm.kmem_size_min: 0 vm.kmem_size: 5033164800 - Rich On Wed, Apr 7, 2010 at 11:36 PM, Jeremy Chadwick <freebsd@jdc.parodius.com> wrote: > On Wed, Apr 07, 2010 at 11:25:57PM -0400, Rich wrote: >> kstat.zfs.misc.arcstats.memory_throttle_count: 673016 >> >> Since UFS has no files of any reasonable size on it (it's literally >> just rootFS)... >> >> ... >> >> > Rich wrote: >> >> >> >> =A0 =A0 =A0 =A0vfs.zfs.arc_meta_limit=3D1073741824 >> >> =A0 =A0 =A0 =A0vfs.zfs.arc_meta_used=3D548265792 >> >> =A0 =A0 =A0 =A0vfs.zfs.arc_min=3D536870912 >> >> =A0 =A0 =A0 =A0vfs.zfs.arc_max=3D3221225472 >> >> >> >> So it very clearly limits to near the minimum size, but whether this >> >> is design or accidental behavior, I'm unsure. > > I don't see a vm.kmem_size entry in there, so I can't see how you're > going to reach arc_max ever. > > -- > | Jeremy Chadwick =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0= =A0 =A0 =A0 jdc@parodius.com | > | Parodius Networking =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 http://= www.parodius.com/ | > | UNIX Systems Administrator =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Mountain = View, CA, USA | > | Making life hard for others since 1977. =A0 =A0 =A0 =A0 =A0 =A0 =A0PGP:= 4BD6C0CB | > >
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