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List:       freebsd-fs
Subject:    Re: ZFS RaidZ2 with 24 drives?
From:       "Ronald Klop" <ronald-freebsd8 () www ! klop ! ws>
Date:       2009-12-29 10:35:03
Message-ID: op.u5o3opx08527sy () 82-170-177-25 ! ip ! telfort ! nl
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On Fri, 25 Dec 2009 01:46:30 +0100, Thomas Burgess <wonslung@gmail.com>  
wrote:

> On Thu, Dec 24, 2009 at 11:53 AM, Ronald Klop
> <ronald-freebsd8@klop.yi.org>wrote:
>
>> Isn't it write caching?
>> My Solaris machine at work also flushes the data every 30 seconds.
>>
>> Ronald.
>>
>> I think you are right.  ZFS does work in bursts...it's very different  
>> than
> what most people expect.  I know it was really  weird to me when i first  
> saw
> it.

So increase your load and you will see a steady stream of bytes when all  
the bursts are clustered together. :-)
BTW: it isn't that weird. UFS does the same, but you probably never build  
a UFS of 24 disks before.

Ronald.
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