Skip site navigation (1)Skip section navigation (2) 
Date:      Thu, 17 Sep 2009 08:26:49 -0400
From:      Steve Bertrand <steve@ibctech.ca>
To:        Anselm Strauss <amsibamsi@gmail.com>
Cc:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Re: ZFS on small systems
Message-ID:  <4AB22B09.4070507@ibctech.ca>
In-Reply-To: <7E2DB08A-9E11-47D7-904D-9F3D8490868E@gmail.com>
References:  <7E2DB08A-9E11-47D7-904D-9F3D8490868E@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help 

[-- Attachment #1 --]
Anselm Strauss wrote:
> Hi,
> 
> I'm interested in using ZFS on one of my small systems with 256 MB of
> RAM and 4 GB flash disk. Since ZFS is now considered production ready on
> FreeBSD I would like to use it as root filesystem and profit mainly from
> the cool snapshot features for easy backups.
> 
> I found multiple recommendations to run ZFS only on systems with enough
> resources. But is this only a requirement if you want good performance
> or also for ZFS to function properly at all?

I've found that on the i386 arch, that at minimum you need 756M of
memory to do anything really useful. Now, I don't know if this has
changed or not, but I doubt that the box would be useful for anything
with only 256M.

With that said, I can keep a box running at max disk r/w for hours on
end with 2GB, and 1536M allocated/reserved for ZFS.

Perhaps however that there have been enhancements introduced that I
don't know about, that allow ZFS to operate in such a small memory
address space, but for some reason I doubt it. If I'm wrong, someone
will let us know ;)

Steve

[-- Attachment #2 --]
0	*H
010	+0	*H
00CK9AbxIUw0
	*H
0b10	UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0
090507231610Z
100507231610Z0B10UThawte Freemail Member10	*H
	steve@ibctech.ca0"0
	*H
0
DZ杙<2IⵀfrsE6q?0.>
S@Œ!V?A\Q
r-aZ
Ōf/0{OYQhɏߴ
F_\Q0BF=<_.a*3epeY|tݼcvlҷ+@piQA{2E9WN4[Z`h6VM/zPbd(GC^K6XV4j<t-0+0U0steve@ibctech.ca0U00
	*H
æ|85aQz-*3HG		.s*Fw*`HvFw;9ytƘn0taC/:WC+LÙ{Oq 1n00CK9AbxIUw0
	*H
0b10	UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0
090507231610Z
100507231610Z0B10UThawte Freemail Member10	*H
	steve@ibctech.ca0"0
	*H
0
DZ杙<2IⵀfrsE6q?0.>
S@Œ!V?A\Q
r-aZ
Ōf/0{OYQhɏߴ
F_\Q0BF=<_.a*3epeY|tݼcvlҷ+@piQA{2E9WN4[Z`h6VM/zPbd(GC^K6XV4j<t-0+0U0steve@ibctech.ca0U00
	*H
æ|85aQz-*3HG		.s*Fw*`HvFw;9ytƘn0taC/:WC+LÙ{Oq 1n0?0
0
	*H
010	UZA10UWestern Cape10U	Cape Town10U
Thawte Consulting1(0&UCertification Services Division1$0"UThawte Personal Freemail CA1+0)	*H
	personal-freemail@thawte.com0
030717000000Z
130716235959Z0b10	UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA00
	*H
0Ħ<UsUNʙZhup[v:aQP
0cZ,p+Z?qV˯<6$*+w=+>@dקe*TH<a@dr`00U00CU<0:08642http://crl.thawte.com/ThawtePersonalFreemailCA.crl0U0)U"0 010UPrivateLabel2-1380
	*H
HP.
fgCL!6-6/P p<ab:~t%Pb'qW%ݩ9 Oe_N4[5MwV!x!5$F]_eO1d0`0v0b10	UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CAK9AbxIUw0	+0	*H
	1	*H
0	*H
	1
090917122649Z0#	*H
	1^On_бo֟VA;0R	*H
	1E0C0
*H
0*H
0
*H
@0+0
*H
(0	+71x0v0b10	UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CAK9AbxIUw0*H
	1xv0b10	UZA1%0#U
Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CAK9AbxIUw0
	*H
p@Chϩqq39*<slX,[{j\89s>UGO Z%B̧Ș]%sf5cE`0x\ATw{Vг>Tccp[MN:7(ƷAQ‰ӾZ-d&x)t$~[U>M8?kFІPzoMk(o
58J$
9NxL[2[Ā2`*XRo,]m!ɛ2x

Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4AB22B09.4070507>