Rsync performance with large exchange database files

[Kevin Korb]

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If possible try adding a cache disk.  It doesn't have to be anything
special.

On 02/10/2014 12:12 PM, bruce at sqls.net wrote:
> 
> 
> ------ Original Message ------ From: "Kevin Korb"
> <kmk at sanitarium.net> To: rsync at lists.samba.org Sent: 2/10/2014
> 10:57:08 AM Subject: Re: Rsync performance with large exchange
> database files
> 
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>> 
>> 3.1.0 will probably help some.
>> 
>> What are the specs of the FreeBSD system? I have found that ZFS
>> on FreeBSD is extremely RAM hungry. In my experience 8GB of RAM
>> is the minimum if dedup is disabled and 16BG of RAM for when
>> dedup is enabled.
>> 
>> Also, a cache disk helps a lot.
>> 
> 
> The FreeBSD system has 32GB of ram, dual Xeon E5620 cpus, the ZFS
> pool is a 6 disk (HGST 7.2K SATA 2TB drives) raidz2 array.  There's
> no compression or deduplication enabled on the pool.  There isn't
> any cache disks setup though.
> 
> I'm starting to do some read-performance tests on the windows
> machine to see if there's a problem there.
> 
> When watching the rsync processes I'm not always clear which end
> it's waiting on.

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	Kevin Korb			Phone:    (407) 252-6853
	Systems Administrator		Internet:
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	Orlando, Florida		kmk at sanitarium.net (personal)
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