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Thread-Topic: FreeBSD & Software RAID
Thread-Index: AcndW7GWUY/kFT/FQRCDPaODR5mdBQAA043g
From: "Graeme Dargie" <arab@tangerine-army.co.uk>
To: "Wojciech Puchar" <wojtek@wojtek.tensor.gdynia.pl>,
	<FreeBSD-Questions@freebsd.org>
Cc: Howard Jones <howard.jones@network-i.net>,
	Valentin Bud <valentin.bud@gmail.com>
Subject: RE: FreeBSD & Software RAID
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-----Original Message-----
From: Wojciech Puchar [mailto:wojtek@wojtek.tensor.gdynia.pl]=20
Sent: 25 May 2009 18:09
To: FreeBSD-Questions@freebsd.org
Cc: Howard Jones; Graeme Dargie; Valentin Bud
Subject: Re: FreeBSD & Software RAID

>
> I have looked at ZFS recently. Appears to be a memory hog, needs about
1
> GB especially if large file transfers may occur over gigabit ethernet
while it CAN be set up on 256MB machine with a little big flags in=20
loader.conf (should be autotuned anyway) - it generally takes as much=20
memory as it's available, and LOTS of CPU power.

with similar operations ZFS takes 10-20 TIMES more CPU than UFS and it's

NOT faster than properly configured UFS. doesn't  make  any sense
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Ok granted this is a server sat in my house and it is not a "mission"
critical server in a large business, personally I have can live with ZFS
taking a bit longer vs resilience. From just looking at my system at the
moment I have 1.8GB of free ram from a total of 4GB.


Regards=20

Graeme