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Date:      Mon, 9 Jun 2008 23:31:35 +0200 (CEST)
From:      Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To:        =?ISO-8859-1?Q?Anders_H=E4ggstr=F6m?= <hagge.lists@intercorner.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: FreeBSD + ZFS on a production server?
Message-ID:  <20080609232736.X39884@wojtek.tensor.gdynia.pl>
In-Reply-To: <1a5a68400806091158n17397a14k66d85e30ac3e1a46@mail.gmail.com>
References:  <1a5a68400806080604ped08ce8p120fc21107e7de81@mail.gmail.com> <20080608215648.Q9779@wojtek.tensor.gdynia.pl> <20080608230131.00003da7@westmark> <20080609001010.G59013@wojtek.tensor.gdynia.pl> <g2hp91$jtp$1@ger.gmane.org> <20080608233315.GA33530@dan.emsphone.com> <20080609094333.H27092@wojtek.tensor.gdynia.pl> <1a5a68400806091158n17397a14k66d85e30ac3e1a46@mail.gmail.com>

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> I haven't heard/read about any huge CPU consumptions from ZFS, not yet

as i already said. most people today have problems as they have too fast 
CPU and too much RAM ;)

they don't see high CPU load on quad core machine with 16GB RAM having not 
big load :)




> For the memory I've read that ZFS use up to approximately 700MB of ram

UFS use what's unused. works on 16MB and 16GB.

> project anyway. The live-cd hangs on "device detect".
> One of the pros for OpenSolaris I've noticed is the support for a
> virtual host

man jail

while maybe not with resource control like on solaris, but i use it with 
success. it's really excellent.

but use nullfs with it to be able to share binaries.

> I have now found a filesystem for linux that do checksum on the fly,
> btrfs.

but why you need it?! all PATA/SATA drives do checksumming on every read.
in hardware, no CPU load.



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