Date: Wed, 23 Oct 2013 18:25:45 +0200 From: Albert Shih <Albert.Shih@obspm.fr> To: pgsql-admin@postgresql.org, freebsd-fs@freebsd.org, freebsd-jail@freebsd.org Subject: ZFS-FreeBSD + postgresql performance Message-ID: <20131023162545.GA19794@pcjas.obspm.fr>
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Hi
I would like to known if someone here have in production a FreeBSD server
with postgresql and the FS for the data of postgresql is a ZFS pool.
I'm going to buy some server with 96Go of Ram and a jbod of 12 disks (4To
each)
The purpose is to have everything on this zfs pool (except the system who
still on classic raid). So to have
many jail (~20-30) running apache/mysql/etc.
one postgresql server with all data on the zfs.
each jail use his own zfs partition. So I can use zfs send/received to have
a mirror of everything in a other server.
My question is about the performance, I known ZFS eat all memory he can
have (or almost), so what append when we run database like postgresql and
jail ? (it's also the reason of 96 Go ram).
Sorry for cross-posting but it's about 3 differents things....
Regards.
JAS
--
Albert SHIH
DIO bâtiment 15
Observatoire de Paris
5 Place Jules Janssen
92195 Meudon Cedex
France
Téléphone : +33 1 45 07 76 26/+33 6 86 69 95 71
xmpp: jas@obspm.fr
Heure local/Local time:
mer 23 oct 2013 18:17:24 CEST
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