Date: Tue, 8 Jul 2008 22:54:49 +0200 From: CZUCZY Gergely <phoemix@harmless.hu> To: Kris Kennaway <kris@FreeBSD.org> Cc: freebsd-fs@freebsd.org Subject: Re: Thinking of using ZFS/FBSD for a backup system Message-ID: <20080708225449.1070252d@mort.in.publishing.hu> In-Reply-To: <4873CF6C.7000205@FreeBSD.org> References: <bd9320b30807072315x105cf058tf9f952f0f5bb2a6a@mail.gmail.com> <20080708100701.57031cda@twoflower.in.publishing.hu> <bd9320b30807080131j5e0e02a4y3231d7bfa1738517@mail.gmail.com> <4873C4FA.2020004@FreeBSD.org> <20080708221327.5c1d0e92@mort.in.publishing.hu> <4873CF6C.7000205@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
--Sig_/abNulJsU+urI/gQ7PKIQqRh Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Tue, 08 Jul 2008 22:34:52 +0200 Kris Kennaway <kris@FreeBSD.org> wrote: > > I've finetuned ZFS as much as I could, I've read every little tiny > > bit of hint/information/whatever that was available and I couldn't > > get rid of those kmem_size panics in -RELEASE and -STABLE. >=20 > Well, it's still almost certainly because you aren't setting > kmem_size high enough. As you saw, that is the only thing I tuned > (disabling prefetch is just for performance in my environment). >=20 > If you can't set it high enough because you don't have enough RAM, > that means your system does't have enough RAM to run ZFS, not that > ZFS is unstable. I've had a box with 2GB of memory for it, and around 5-6 filesystems. I've set kmem_size as large as it was allowed, not a bit smaller. Where's the guide showing how much memory should I have for a setup? How can "enough memory" be determined for a setup, without having panics? >=20 > Kris >=20 --=20 Sincerely, Gergely CZUCZY, Harmless Digital mailto: gergely.czuczy@harmless.hu Legacy software is software that works. --Sig_/abNulJsU+urI/gQ7PKIQqRh Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFIc9QbzrC0WyuMkpsRAjp9AJwOJy2wFJQBNmIbZ+Tz0Wrl/UhjDgCgidoR AsR0Sct76jVPpbgsAoyjiaM= =3uD9 -----END PGP SIGNATURE----- --Sig_/abNulJsU+urI/gQ7PKIQqRh--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20080708225449.1070252d>