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Date:      Thu, 11 Mar 2010 11:53:08 -0600
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Leslie Jensen <leslie@eskk.nu>
Cc:        Steve Polyack <korvus@comcast.net>, freebsd-questions@freebsd.org
Subject:   Re: Does compression on zfs pool affect performance? .......WAS, Re: Silicon Image SiI 3124 and 3132 RAID controllers
Message-ID:  <20100311175307.GA4528@dan.emsphone.com>
In-Reply-To: <4B98CA26.4050609@eskk.nu>
References:  <4B980792.3050103@eskk.nu> <4B981934.9090904@comcast.net> <4B98CA26.4050609@eskk.nu>

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In the last episode (Mar 11), Leslie Jensen said:
> The solution for me was to create a raidz which gave me the same amount of
> space.  Now I wonder, should I enable compression?  Will it affect
> performance?

The default lzjb compression is very fast and won't consume much CPU.  If
you have lots of easily-compressabe data it should improve performance.
 
> Later I want to share this pool with SAMBA. Will SAMBA see the pool as a
> filesystem?

I don't think Samba cares about the filesystem layout, since it's a userland
daemon.

-- 
	Dan Nelson
	dnelson@allantgroup.com



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