Date: Wed, 7 Apr 2010 20:36:30 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Rich <rincebrain@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS arc sizing (maybe related to kern/145229) Message-ID: <20100408033630.GA69748@icarus.home.lan> In-Reply-To: <i2l5da0588e1004072025w953351c1l8400fbd0c1766c5f@mail.gmail.com> References: <z2o5a1151761004071105kb129ca4q7dfd002270d53561@mail.gmail.com> <h2u5da0588e1004071146lf09ef89eo217933f75ec7a88b@mail.gmail.com> <4BBD15E7.5010006@xpam.de> <i2l5da0588e1004072025w953351c1l8400fbd0c1766c5f@mail.gmail.com>
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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: > >> > >> vfs.zfs.arc_meta_limit=1073741824 > >> vfs.zfs.arc_meta_used=548265792 > >> vfs.zfs.arc_min=536870912 > >> vfs.zfs.arc_max=3221225472 > >> > >> 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 jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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