From: Alan McKinnon <alan.mckinnon@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] ZFS
Date: Tue, 17 Sep 2013 18:39:56 +0200 [thread overview]
Message-ID: <523885DC.9000203@gmail.com> (raw)
In-Reply-To: <CAN0CFw046Kqw0JuZpWrFXNFOA+jEeY6LMz3xm_fUnB6Dbuz-7g@mail.gmail.com>
On 17/09/2013 15:22, Grant wrote:
>>> Performance doesn't seem to be one of ZFS's strong points. Is it
>>> considered suitable for a high-performance server?
>>
>> ZFS is one of the fastest FS I am aware of (if not the fastest).
>> You need a sufficient amount of RAM to make the ARC useful.
>
> How much RAM is that?
>
> - Grant
>
1G of RAM per 1TB of data is the recommendation.
For de-duped data, it is considerably more, something on the order of 6G
of RAM per 1TB of data.
The first guideline is actually not too onerous. It *seems* like a huge
amount of RAM, but
a) Most modern motherboards can handle that with ease
b) RAM is comparatively cheap
c) It's a once-of purchase
d) RAM is very reliable so once-off really does mean once-off
--
Alan McKinnon
alan.mckinnon@gmail.com
next prev parent reply other threads:[~2013-09-17 16:44 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-17 7:20 [gentoo-user] ZFS Grant
2013-09-17 7:36 ` Marc Stürmer
2013-09-17 8:05 ` Pandu Poluan
2013-09-17 8:22 ` Alan McKinnon
2013-09-17 9:44 ` Grant
2013-09-17 9:42 ` Grant
2013-09-17 10:11 ` Tanstaafl
2013-09-17 16:32 ` covici
2013-09-19 22:41 ` Douglas J Hunley
2013-09-20 23:12 ` Hinnerk van Bruinehsen
2013-09-19 22:46 ` Douglas J Hunley
2013-09-17 9:52 ` Joerg Schilling
2013-09-17 13:22 ` Grant
2013-09-17 13:30 ` Joerg Schilling
2013-09-17 16:39 ` Alan McKinnon [this message]
2013-09-18 4:06 ` Grant
2013-09-17 10:19 ` Tanstaafl
2013-09-17 13:21 ` Grant
2013-09-17 15:18 ` Michael Orlitzky
2013-09-17 15:40 ` Tanstaafl
2013-09-17 16:34 ` Michael Orlitzky
2013-09-17 17:00 ` Tanstaafl
2013-09-17 17:07 ` Michael Orlitzky
2013-09-17 17:34 ` Tanstaafl
2013-09-17 17:54 ` Stefan G. Weichinger
2013-09-18 4:11 ` Grant
2013-09-18 7:26 ` Stefan G. Weichinger
2013-09-18 15:17 ` Stefan G. Weichinger
2013-09-19 22:46 ` Douglas J Hunley
2013-09-20 9:17 ` Joerg Schilling
2013-09-20 11:17 ` Tanstaafl
2013-09-18 4:02 ` Grant
2013-09-17 18:00 ` Volker Armin Hemmann
2013-09-17 18:11 ` covici
2013-09-17 19:30 ` Volker Armin Hemmann
2013-09-18 4:20 ` Grant
2013-09-20 18:20 ` Grant
2013-09-20 23:07 ` Hinnerk van Bruinehsen
2013-09-21 4:34 ` Grant
2013-09-17 18:11 ` Tanstaafl
2013-09-17 19:30 ` Volker Armin Hemmann
2013-09-18 4:22 ` Bruce Hill
2013-09-18 8:03 ` Neil Bothwick
2013-09-18 12:55 ` [gentoo-user] ZFS James
2013-09-19 4:49 ` Grant
2013-09-19 7:43 ` Pandu Poluan
2013-09-19 7:44 ` Hinnerk van Bruinehsen
2013-09-19 7:47 ` Pandu Poluan
2013-09-19 8:04 ` Stefan G. Weichinger
2013-09-19 13:04 ` Grant
2013-09-19 10:37 ` Tanstaafl
2013-09-19 12:29 ` Grant
2013-09-19 12:54 ` Pandu Poluan
2013-09-19 13:01 ` Grant
2013-09-19 13:12 ` Pandu Poluan
2013-09-18 4:12 ` [gentoo-user] ZFS Grant
2013-09-18 9:56 ` Joerg Schilling
2013-09-18 17:04 ` Volker Armin Hemmann
2013-09-19 4:47 ` Grant
2013-09-20 15:11 ` Volker Armin Hemmann
2013-09-18 13:53 ` Stefan G. Weichinger
2013-09-19 1:02 ` Dale
2013-09-19 4:44 ` Grant
2013-09-19 7:40 ` Dale
2013-09-19 7:45 ` Pandu Poluan
2013-09-19 9:07 ` Joerg Schilling
2013-09-19 11:22 ` Dale
2013-09-19 11:27 ` Joerg Schilling
2013-09-22 1:19 ` Dale
2013-09-19 9:04 ` Joerg Schilling
2013-09-21 12:53 ` thegeezer
2013-09-21 16:49 ` Pandu Poluan
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